Night 2 - Lems Are Playing Freeze Tag! Nice first level from you and not too hard, though I did make the mistake of building from left to right for the final gap instead of the other way around. It might still be a little difficult to be this early in the pack IMO, though I know that Mobiethian did a lot of the level ordering, so I'll make sure I bring this up with him. The only reason I think so is just simply due to everyone being a pre-assigned slider and so the main challenge is just coming up with ways to turn them back from going out the "wrong" way.

Night 3 - Choo Choo, Santa! The main difficulty comes from figuring out the most efficient way to get through the level, but it's not easy to because of the very limited skillset. I think it's clear that one needs to go over the top, but it's not easy to see how to use the skills efficiently here.

Night 4 - Christmas Tree Hunting The main difficulty comes from figuring out the solution. Here, I made the mistake of going through the tree instead of going over it, the one after the water gap. Doing it the second way seems to always leave you a skill short. Very nice red herring, but the level did feel like it's hard for its position.

Night 6 - Silent Night, Holy Night Another one that I didn't find too bad, though I found the final part of the level the hardest, but that's because I tried some incorrect things, such as making sure the gap is completely sealed off at ground level instead of the mining finishing a lot higher so that it's easier to reach the exit. Well done, I think this is the right difficulty for the rank despite the very restricted skillset.

Night 7 - Lighter Than a Snowflake This on the other hand IMO is too difficult for its position. The solution is quite obvious in that one needs to get a non-glider to the very far right in order to land at the bottom safely without dying to the fire trap, but how to achieve it is very hard. It's a very nice trick with jumping with a glider and then cloning him at the right spot in order get the stoners in place, but it's the hardest part of the level. It's also not easy to judge whether a non-glider is able to get to the next snowflake with jumping. So, this level definitely needs to move later in the rank, but I'll let Mobiethian know. You also have just the right amount of jumpers to do so and therefore cannot waste any of them at all.

Night 10 - Party Time! Very nice builderless level! Even then, it's still a little difficult to figure out the way through to the pickup and back. I did finish with some skills leftover, but my solution is likely still acceptable. This I feel is the right difficulty for the rank as well

Night 11 - 23:58:30 12/24 Nice title, being a reference to 1.5 minutes before Christmas Day and therefore the 1:30 time limit This was a really great level, I like it a lot The most clever part was having a worker on the far right flip all the splitters to allow another through in one smooth go. The hardest part to see here was where the digger needs to be used, as well as realizing that every Lemming goes to his own exit: Floater to the far left one, climber to the middle, and finally the regular one to the far right one. Also because I kept thinking the digger goes in the upper part of the level on the far right and that two need to use that exit I made the mistake of having one Lemming be both the floater and climber. Nice red herring! I love how everything falls into place once one realizes the solution. Well done!

Night 12 - Lost and Found Another nice level, though the hardest part was rescuing the shimmier that was stuck in an endless loop. I can definitely see similarities to David's Jasmine level from DavidLems here!

Night 13 - Claustrophobia 2 Aha, the sequel from your Xmas 2021 pack but with a very good use of the time limit! Very nice trick with leaving a step past a thin enough wall to have a worker land on it and build the rest of the bridge to catch the others from the other side. I managed to finish with just a second remaining, phew!

Night 15 - Happy New Year! Wow, great level from the both of you The hardest part was seeing the mining on the first 2 in order to rescue the one trapped at the bottom. That part is pretty precise, especially as you have to take care to make sure you don't leave a gap in the platformer bridge. There's a lot of wrong ideas that look like they can work but they don't. In particular, the hardest part was figuring out where you need to do the bridges and which ones you can afford to not use a constructive skill. I think the gap before the exit is a given that a constructive needs to go there. It was also not easy to figure out how to get the button where the water is, but I had more trouble figuring out how to get both to the exit with the 1-of-everything skillset provided. Well done, gentlemen!

Night 16 - All I Want For Christmas is... Not too hard of a level, though I incorrectly kept trying to fiddle around where the OWW is where the stomper trap is. I knew that we had to go through it, but what wasn't right was thinking that all the diggers go there. I did think about going through the huge water pond on the right side, but it took me a while to figure out that it was the correct way and how to get the swimmer out of there without also putting the non-swimmer in danger. It's quite easy to think the left Lemming needs to the swimmer instead of the one from the right. The correct way actually has the swimming digger go all the way to the very bottom instead of trying to interrupt him. As a result, this one might possibly be too hard for its position, but it's a bit more than halfway through the rank, so it might be fine.

Night 17 - Living in a Fairy Tale Seems open-ended, especially given that one can lose plenty here. Even then, it can still be difficult to work out the best way to go about the level, especially each section. In particular, there is a splat fall to deal with and just being able to get the right entrance over to the left. I think I could had been more efficient with the middle part by stoning higher so that one only needs to platform, though maybe then I would be wasteful with them if they're needed elsewhere. Even then, I think the builders/platformers are interchangeable for the most part. Just the right difficulty as well IMO.

Night 23 - Moondance Another great level that I was impressed with. I saw the solution almost right away, and it's really nice how it all comes together timing-wise. Nice trick with shooting a laser and interrupting the climber basher who frees the top entrance!

Night 25 - The Bear Necessities Nice level to finish off the rank. This was a bit hard to figure out, but I expected that. I managed to save a digger, so I don't know if that's a backroute or if I was simply efficient here. I think it just depends on how one does the building at the start so that it determines whether two or three slip on by. Thinking of how to contain the crowd and releasing them later is not easy!

Daytime 1 - Walking Bearfoot in the Snow Very nice level to start the rank! That's super clever with having one Lemming jump into the ice machine trap so that the swimmer/disarmer doesn't die to it. Before I had figured that out, I had all the level figured out except how to get a Lemming in position to platform the water gap, which can only be done from the right side. I remember the solution came to me as I went out to get some late night fast food with the jumping into the ice machine so the worker survives That trick alone IMO makes the level difficult to be the first one for the rank, but IIRC the remaining ones for the rank are all harder, and so this one is probably fine where it is.

Daytime 2 - Wake Me Up When It's Christmas Open-ended and just the right difficulty and hence it seems fine for the second level of the rank.

Daytime 4 - Angels We Have Heard On High Another nice one from the both of you. It's a bit hard to figure out how to bridge the gaps, though once I tried a builder for the first one and saw that one isn't enough, then the solution became a lot clearer. For example, for the tip of the iceberg that immediately screams out land there with a glider by cloning it and then build/clone, and therefore stack and then clone a platformer for the first gap. The hardest part then was the middle part, as I thought fencing would work but it wouldn't since he would stop before getting through the last part of the next wall, but I saw that I have a digger to spare and hence it was clear to me that you're supposed to dig and then fence. That part is pretty precise, though. It's obvious that it needs to be that, since a laser stops way before the second wall.

Daytime 6 - Skating on Thin Ice Wow, another great level! I especially love that trick of bashing with one and the next Lemming goes on ahead to platform to turn around and then the basher cuts off the platformer bridge to allow the one that turned around to fall before the snowman I had figured that out somewhat fairly quick, but then the hardest part was seeing the platforming and then stopping him with a basher before he seals the gap off in order to punch a hole in the wall so that he can climb into it and bash again. Might be a bit hard for its position due to these tricks, but I think it might be fine.

Daytime 8 - Fluffy Snow vs Rock Hard Ice Another great level! It was very hard to figure out how to do the building over the water gap in the bottom middle. I kept thinking that the worker needs to be the one to do both sides and also the gap before the exit, but turns out that after you release the crowd you have more than enough time to build from the left and the final gap before you lose too many thanks to very low RR. That was really hard to see, and before I realized the solution I thought I had the solution but then realized I'm probably not using the shimmiers properly. It was also hard to see building over the water gap on the left side, as I kept thinking to use shimmiers there due to the terrain setup Also needing to bash through the OWW on the right caused me to keep overthinking the solution It's another one that might be difficult for its position as well.

Daytime 9 - Amphibious Operations I was quite impressed here as well! This one really reminds me of the Prerequisite level from Xmas 2021, which I nominated IIRC It was clear where the cloner needs to be used in order to get the rest of them out of the water pit near the top right. I have two solutions, where the miner hits the steel to turn and then digs but luckily everyone makes it out before the wall becomes too high. I didn't realize that you can scoot the miner over a little and the swimmers would still be able to get out of the water pit. I especially love the lasering from the bottom right in order to release the crowd. Before I realized this, I kept thinking to dig and then either fencer or laser out, but then this causes everyone to fall and splat later. The fencer at the start is a bit precise, especially as it almost nearly doesn't release the crowd. I do like how the disarmer turns around before all the crowd does so that you can bomb the final swimmer in the bottom middle to allow the clone disarmer through.

Daytime 14 - Sky Shield Hard one, especially with figuring out how to release the crowd and whether you're supposed to keep the crowd moving or can contain them. Also if the latter then if you release with either the basher or bomber. I did realize the middle part with getting a shimmier through, but this was also the hardest part to see with bombing it in order to allow the slider to shimmy through. I kept thinking you needed two shimmiers here, but then I would run out or the slider slides down the stack instead of going over like I want him to in order to make another round on the right side. I especially love the timing here of the slider and climber and they do work separately on the right and left sides, respectively, in order to help the crowd later. It was very satisfying seeing the solution all come together Would the title here be a reference to SC2: Legacy of the Void? I remember that one was a pretty fun mission.

Daytime 18 - INside OUT Nice level. Here it was very hard to see what the glider is used for. Here it's quite important to figure out when to platform up the gaps, as doing it in the wrong order will cause you to fail. It was also clear that one needs to mine at the top of the huge wall in the middle first, as otherwise the crowd has no way to get to the exit later. All the complications come from platforming up the gap on the top right first because I was wondering how would you platform the gap at the bottom right first before releasing the crowd.

Revised feedback since this needed to be resolved: Took me a while to see that the water at the top is important so that the crowd can still walk to the exit later. This should be intended now and if so great level! Definitely had a hard time working out how to get around the issues that arise when making the tunnels in the huge middle structure. 

Daytime 20 - Watch Your Step! Another one which appears to have been inspired by that level of David's from DavidLems with collecting the right pickups. Even then, it was pretty hard to figure out the solution. Before I realized the correct way, I kept thinking to release everyone to the bottom right, but the problem is more gaps than you have skills to have all of it covered. I think once I realized stoning at the top to keep a basher going the solution was a bit clearer. That was really clever with putting a blocker at the far left to bounce the miner despite the small gap. I kept thinking that it needed to be timed so that the blocker blocks in front of the miner as he's going. The mining is really precise, though. I like how other the corner ones which are complete red herring pickups all need to be collected except for the slider in the top left and the two pickups over the water on the left side.

Daytime 22 - Warm Cozy Basement This one wasn't too bad at all, though how to contain the crowd and where the building needs to be done were not easy to figure out. I think I could had made the timing less tight if I had the released the crowd at the right time better. I have a shimmier to spare, but this seems to be acceptable, as I was probably simply efficient. Nice level.

Daytime 23 - Constructus Interruptus As you mentioned, this is the hardest level of the pack, and I would agree with you here. The closest I came to a working solution but it failing was due to me wanting to get a builder to release the crowd from the right side by finishing at a point so they can get over the stack. After seeing all possible positions, I kept wondering how to do the level as it seems that I needed to rethink my approach. I saw that a fencer is able to cut off the platformer bridge, but the problem here is that getting him in the middle of the level the fencer finishes too far away from the platformer bridge is. Also, I kept thinking he would need the help of a stacker to reach it, but I saw he always stops before he gets close to it no matter how the stacker is placed. When I saw that a platformer does allow a Lemming through with a one-pixel gap, I thought hmm, perhaps I can time this in such a way so that I can stack with a Lemming before the platformer lays one final brick to be one pixel away from closing off the gap and have one Lemming get through. It was also very hard to see that one needs to go through the water gap at the very top and fence through the trees to get the upper entrance down. I kept thinking that it has to be the case of bashing/cloning at the bottom middle to release the bottom entrance and to reach the exit, but what I couldn't phantom was the far right with closing off the gap with two constructives, one which needs to be a platformer, but then I wouldn't have a platformer to get over to the middle part because I used a platformer at the top. A lot of very appealing red herrings here makes for a very hard level.

Overall, this is a great level, just with too much precision, though if this is intended then yea, no way to avoid the trick platforming and stacking to stop the platform and then be able to build to get over the stack without the stack closing off the gap completely. However, the precision with fencing through the trees can be reduced easily, as there are some holes that can stop the fencer.

Revised feedback due to needing to be resolved: The clicking moment came to me when I remembered a Lemmings Uncharted level which required the building in such a way to release the crowd over the stack from the other side. Nice! Also helps that you released a contest level in the previous LDC which required something similar with interrupting constructive skills. So really, the level title is kind of a big hint to the solution even though you told me it's a reference to Team Fortress Overall, an excellent level with a hard to find solution but can still be worked out logically!  

Daytime 24 - Where Angels Dwell Definitely not as hard as the previous level but still difficult. I can definitely see inspiration from my level "Snow Way!" here with the first icicle trap I kept thinking that two workers need to simultaneously build over the water gap in the middle, when in fact only one worker needs to do it. It was also hard to see where to put the blockers and the route to take through the small rings and terrain at the bottom. I really like the fencing at the end with the crowd going under and to the right to get redirected by a blocker to then use the 3 builders to reach the exit. Before I saw this, I kept thinking to go through and over, but in fact there is a tiny wall that doesn't allow you through, no matter how you use a bomber. Great level and very nice design!

Daytime 25 - And They Lived Happily Ever After I literally LOLed at the part where a lot of the neutrals and Lemmings make the heart and HAPPY XMAS text just fall and drown in the water at the start That's really clever and neat, though A very nice conclusion to a wonderfully made pack by the both of you. It took me about 5 mins to realize that it needs to be a very long basher through by putting a platformer at the right spot to extend it. A nice level with a few surplus skills.

Sweet 1 - Basic brick Nice level to start off the pack with a very nice save all optional challenge!

Sweet 2 - Falling down the stairs You'll be fine as long as you accept the many unfortunate losses here, as there's nothing you can do about the ones that get trapped at the bottom.

Sweet 3 - Long road to nowhere Can be challenging since there's no way to hold back the crowd, but you do have the necessary skills to avoid both of the traps. It's a matter of clearing obstacles as you get to them in order to avoid too many unnecessary losses.

Sweet 4 - Wish upon a Lemming Nice open-ended level with another great save all!

Sweet 5 - Just relax... As long as you know your stoner mechanics and realize you need to build over both the first and third gaps, you'll be fine here. I'm definitely surprised this managed to stump Guigui, but here I acknowledge that it's simply likely due to him not being well-versed with stoners.

Sweet 6 - A Puzzle Adventure Nice level to finish off the rank! I'm not sure if anything's changed here from previous versions, as I did take a quick look at the level after Pieuw posted not being able to solve this one, which I don't think is difficult. Again, it's due to him not being used to the new portal objects that were added in v12.13 NL.   

Sour 1 - Back again? Excellent level to start the rank! Love that sending two climbers ahead, one to build to the exit for the others and the other to turn around to bash the OWW to free the crowd, with the added twist that you need to time it correctly so that the first climber doesn't get blocked by the builder staircase and therefore will prevent him from coming back to the crowd later on. Well done!

Sour 2 - I need some space... Definitely the hardest level of the pack IMO, as it took me a while to figure out the solution. Another very nice level and one of the best of the pack! Nice use of the blocker to compress the crowd but with the added twist that you must release them before everyone falls out of the entrance so that you can bash through the first diagonal terrain before you lose too many from falling out the wrong way. Well done here as well!

Sour 3 - Chasm Capers Open-ended level and very interesting there's 2 of everything except for builders where you have 60 I'm not sure if the level is supposed to be harder than this or if it's simply anyway you like and that you just need to be quick before you lose too many Lemmings.

Sour 4 - The Ball Pit Excellent level! That jumping the penultimate gap to dig and then bomb in order to have the final builder go all the way through to the exit platform without getting interrupted is quite clever.

Sour 5 - Through thick and thin Another excellent level! Jumping over the gap and exit and mining from above along with bouncing off a blocker to free the crowd from below for the solution is really nice And of course that shimmier, I love the shimmier skill a lot in NL

Sour 6 - The Institution This definitely reminds me of a past contest level of The Tomato Watcher's which was kind of one that failed because it was backroutable IIRC. It seems way more solid here. Nice level to finish off the pack and not too difficult to figure out since you don't have that many options at any moment. Nice added touch with the final builder to the exit and then using the walker skill to turn him around to bash and release the crowd.     

Eon 1 - Be Attitude For Save One Nice level to start off the pack even if I got this one super quick. I love the part with bombing the second climber in order to make a turnaround point for the first one who needs to be interrupted with a builder after bashing and making a route to the exit.

Eon 2 - Trust Your Lucky Star? Not a hard level if not concerned with the talisman, but as mentioned it's super frustrating if going for it. A lot of the time the climber came at the wrong time and hence wouldn't be able to make it to the very top. Consider easing the talisman to make it less frustrating. It is a nice one though!

Eon 3 - I Am E.Z.T Nothing hard here other than you need to make sure you don't destroy all of the overhang on the far right edge, since that serves as a splatform for the Lemming trapped on the left side. It still took me longer than it should had. Not sure why it took me a while to figure it out

Eon 4 - Head Bang Bump Wash Dry Turn Blow Another one that I struggled with much longer than expected. Not sure why building to get over the teleporter from the right side took me a long time to figure out. This makes a big difference in that it allows the long basher to get to the receiver area in time to allow a neutral through after parking with a blocker and bombing to release one at the right time

Eon 5 - Four Shruggers Easy one just like Eon 1. The only hard part is the top Lemming using one builder only as delay, but it's not too hard to see after one spots catching the bottom climber with the middle Lemming by building and you see that attempting to build past the traps results in splatting after it's done. 

Neo 1 - One Hot Minute Wow, very nice talisman and one that took me a long time to figure out. It took a while for me to find a different way than having one climb to go on ahead before I succeeded. It really should had occurred to me that you will always fail the talisman if even one obstacle is climbed, but I didn't catch on apparently! As mentioned, the talisman solution is very well-hidden. Didn't think to use a digger to turn around instead of two bombers at the start. In this way, you will have all bombers to clear all the obstacles ahead so that no climbing is necessary, since it's impossible to achieve the talisman that way, even if you squeeze out the maximum potential in saving as much time as possible. Excellent talisman!

Neo 2 - So Many Spikes Somewhat hard and one in which you will always fail if you take the normal route of passing through the traps at the top, as all Lemmings get killed, even if you bomb the athlete to release the blocker so that he's compressed with the rest of the crowd and hence only 1 dies to each trap. It's not clear that a bomber is enough to not get anyone killed to the needles trap at the start. Nice solution with bombing close to the steel wall at the bottom so that the athlete is the one who goes to the exit!

Neo 3 - Eroded Ark Nice builderless level! These tend to be my favorite type of level in the game. Took me some time to see that the climber is the one who goes to the exit, not the floater. The floater simply prepares the route for the climber. Once you realize that, you have to figure out how to delay the others long enough to be able to send a climber at the right time but not so long that one of the diggers digs to the bottomless pit.

Neo 4 - Tower of Sacrifice Nice level by Icho here! Love the concept of the climbers needing to survive and go up the ramps to make turnaroud points by bombing. It can be a bit difficult to get the climbers to be first to get up the "tower of sacrifice" though. I'm guessing the floaters are for that purpose of making the timing easier, especially to release the Lemming trapped at the bottom by making him climb.

Neo 5 - The 6" Escape Plan Yea, sorry, this also made me rage. I really would suggest expanding and making more room available so that it isn't so tight on the execution. Remember, demanding precision to increase the difficulty is not a great way to do so, especially on an engine that emphasizes that the difficulty should come from the puzzle, not the execution It also wouldn't hurt to make some things more obvious that they wouldn't work, such as destroying the terrain before the exit being off by a few pixels and similarly with making it more obvious that the miner would fall past the exit at the top.   

One 1 - Umbrella Irony Irony indeed, as for some time I assigned the final floater to the wrong Lemming. That's simply due to me being so fixated on building on the far right with the second builder to turn around, when in fact you can just build on top of the green emerald in the middle of the level to do so. Doing this gets around the problem of the timing not working out in the middle of the level with the gap before the emerald. Excellent level!

One 2 - Aquarium Deception Wow, this is one of the most creative levels I've seen that involves the nuke! I should had picked up sooner that the nuke is involved due to the high Lemming count, combined with the very low save requirement, and how if you attempt to build over the gaps on both sides you'll always be a builder short. My only point of criticism here is that if my solution is intended, I would lower the terrain at the top so that it's clearer they won't walk out the top of the level and die. I'm not sure if the solution can be adapted to get to the exit from the right side instead.

One 3 - Clappy Clapple Backroute just like darkshoxx, though I haven't seen their solution yet. Mine's definitely one since I saved way more than 1 Lemming here

One 4 - Clues Do Easy one but only because I'm already aware of the double builder turnaround trick. Still, I like how every Lemming needs to keep moving forward in the level, especially as only the non-climber can make it to the exit. Well done!

One 5 - Blues Possibly the hardest level in the entire pack, I had a suspicion the nuke is involved here too. It just took me a while to figure out how to make it work, as it's way less obvious here than on One 2. Should had been clear due to always being a destructive skill short if taking some kind of normal route. All the cracks and everything in the level all seem to be due to backroute fixes and hence that kind of compromises the aesthetics of the level to an extent Even then, what do I know, as I haven't made that much levels in the Fire tileset yet. Nice solution but can be very hard to execute. That took me several tries before something finally worked, since I would be able to get the crowd to the exit but none would be able to exit since some explode to take away the terrain burying the trigger and hence the ones that stop on top of the exit trigger fall past it and therefore can't exit. The solution definitely reminds me of one of my levels for my upcoming Lemmings Memories pack, but as mentioned I'm not going to spoil which one it is You'll have to wait for me to release the pack first, if and when I ever do Even then, there's a possibility that people might have figured out which one if observant enough

One 6 - Bonus Level : The Blue Pi Nice level to finish the pack on but can still take several tries before something works as well. Here I managed to save a digger but should still be acceptable since it should only be possible to save just one Lemming. Looks like I'm not quite right in that it doesn't have to be the athlete that makes it to the exit. Any of the others can do too, as long as the floating block is used to get to it.     

the basher and miner are interchangeable in the solution It's true that the miner skill is a downwards moving destructive skill, but the basher skill's destruction mask starts at the row of the Lemming's feet and removes several rows of pixels above it too If you do it this way, you need to make sure to mine through the dart in the same way so that he is not delayed, i.e, you need to be right up against the dart when you assign the miner. Then the basher assignment to release the ohnoer is at nearly the same spot as the miner, just an extra pixel forward but the effect in the end is the same: The ohnoer touches the exit trigger on the ground in time before he explodes