One Hot Minute - Weirdly, on revisiting this level, I found it easier to get the talisman solution than the regular one! I always struggled with the timing of using two climbers so it was kind of a relief not to have to think about that. I had a bit more time left at the end than before as well

So Many Spikes - Almost certainly the hardest level of the rank. If I did it correctly, the key was realizing that it doesn't really matter about compressing the crowd to the nth degree as both of the trap routes are red herrings and impossible. It's just that the blocker needs to be close enough to the ramp to create a concave hollow when he explodes to turn the climber around. Nice level, if somewhat vexing ;-) Very long solve time for this level!

Eroded Ark - This one's clever. Took a minute to see what needed to be done and then to execute it.

Tower of Sacrifice - Didn't have my thinking hat on the first time I looked at this level. And I should have known you would never have any leftover skills in an IchoTolot level! Well, except the floaters - I didn't really have any use for them. A typically well-designed level from Icho.

The Six Seconds Escape Plan - Thanks, I hate it.

Night rank

Sky Castle - Pleasant opening to the pack that won't pose many problems to experienced solvers.
Lems Are Playing Freeze Tag - Arman's first level is definitely trickier, mainly getting your head around slider mechanics - those pesky critters!
Christmas Tree Hunting - Mobiethian's hardest level so far; working out how to contain the crowd as well as have the pioneer go in both directions. It may actually be his hardest off the pack, although Rocky Road runs it close. Clever stuff!
Silent Night, Holy Night - Quite a long solve time for this one, which will become a recurring theme of Armani's levels! The hard part here is working out the correct use for a pretty limited skillset for such a large level.
Lighter Than a Snowflake - The one that originally caused me to give up on Armani's levels in the pack. Coming back to it 5 months later, it's not as hard as I remembred but still gave me quite a lot of trouble (I always struggle where gliders are involved too!). Working out what skills you are going to need at the end is key, as well as the optimal path to the gap in the fire at the top right of the level, plus where you need to use the cloner (logically, it can only be one place).
Uphill Sled Ride - Nice puzzle! The tricky bit with this one is getting only two lemmings to go over the top while the rest are contained, making use of a skill in transtion, so that one of the two that go over can fence back up to the crowd.
Rocky Road - One of Mobiethian's hardest levels in the pack for my money. Another really well-designed puzzle.
Lost and Found - Not Armani's toughest level but working out how to release the infinitely looping shimmier can be hard; not so much the how as the when!
Claustrophobia 2 - Appropriate title given how tight (time-wise) this level is. Even with absolute optimal skill deployment, you will still only have a second to spare at the end!
Happy New Year! - This jointly authored level is deceptively difficult, working out the only correct path (I assume) to victory! Took a bit of thinking out, this one - well played, guys!
All I Want For Christmas Is... - The first level in the pack to have me partially stumped. Definitely Armani's hardest level in the Night rank. Small hint acknowledged, the lightbulb moment was realizing that the lemming on the right side has to do pretty much everything.
Living in a Fairy Tale - Gorgeous tileset. I always love levels that utilize it and this one is no exception!
The Lem is Home Alone! - Another joint effort that required a pretty long solve time!
Night of the Christmas Crystals - What I call a slightly more arcade style level due to all the jumping around. Fun!
The Bear Necessities - Tough one. Aside from All I Want, probably the longest solve time of the rank. I don't think I backrouted it, but I did have a diggger to spare at the end.

Daytime rank

Walking Bearfoot in the Snow - This is the rank where we really start to see the genius of Armani's level design! In this one, the tactic of allowing the crucial pioneer to fall through the trap unharmed by having a sacrificial worker lemming take his place took a lot of spotting. I haven't seen trap response times used in quite this way before, but had a hunch they might, and also, there wasn't really anything left to try at this point; it's quite a restrictive level, in terms of skills.
Wake Up When It's Christmas - A rare open-ended level from Armani and a ton of fun to play through!
Do the Polar Plunge - Not too hard, but also lots of fun - love jumpers!
Angels We Have Heard On High - An uncharacteristically easy joint level, but I suppose it's early in the rank. Very enjoyable nonetheless.
Your Gifts Are Over There - Neat idea to have the pioneer do his work underneath the crowd.
Skating on Thin Ice - Tricky one, but once you realize you can't use the digger at the start because you'll need him later and that the snowmen have climbable sides (not a sentence I ever expected to write!), the rest is straightforward.
Fluffy Snow Vs Rock Hard - Very clever, Armani, very clever.
Amphibious Operations - Difficult one for me as I always struggle a bit with the mechanics of swimmers but ultimately another nicely designed level from Armani!
Sky Shield - The hardest level of the pack so far, to my mind. Very, very long solve time. Though I got 95% of the way through I did need that final push from Armani to get me to see one little thing right at the end. Once again, a brilliantly designed level that utilizes every last skill.
Roller Coaster Mountain - In which we see once again that Mobiethian is a big fan of the lone pioneer, leading from the front!
Mele Kalikimaka - Tropical Christmas Vacation? I love the atmosphere of this one, nice break from the rest of the pack!
Like a Snowman Inside a Fridge - Another surprisingly straightforward joint effort but looks great and is fun to play through. Love this tileset too, it always reminds me of Festival Millas, which are among my favourite packs ever!
INside OUT - Strangely gave me a lot of trouble, given that it's not an especially hard level, but I was being especially dense. Looking at it afresh on a new day, it was quite obvious what needed to be done.
Watch Your Step! - Now we get to the business end of the pack in terms of Armani's levels. Long solve time. Very hard to work out what needs to be done. Clever use of the stoner to enable a single basher tunnel at the top. Clever use of sliders. Clever how it all comes together. Just a clever level.
The Lem is Lost in the City - Smart level design and again, it looks fantastic!
Warm Cozy Basement - One of Armani's hardest levels I would say. Very long solve time. Looks impossible at first, as Armani's levels often do. How to get that single floater to go back up and down to mine the tunnel to the crowd? A head-scratcher for sure! Lightbulb moment here was realizing that the blocker isn't for the crowd when they're at the top, but once they've got down, awaiting the miner to set them free. Genius level, honestly.
Constructus Interruptus - Arguably the hardest level of the pack or at least I think so, and Armani probably concurs. He was kind enough to say that I had almost solved it in a replay I sent him, but without the hint he gave, I doubt I would have finished it. The final bit I hadn't got is critical and as I said to him, I don't think I would've seen it in a month of Sundays! It's a 'trick' (more of a technique really) that I'll remember for future solving though. It's a clever level again and the clue's in the name, but travellers be warned - it's not easy in the slightest to work out what you're supposed to do!
Where Angels Dare - Another level that looked impossible at first pass, but in the end it wasn't too bad. Something of a breather level compared with the last two!
And They Lived Happily Ever After - All the neutrals drowning at the start made me laugh out loud! Had a platformer to spare at the end and a ton of jumpers. Is this a reference to being given an abundance of knitwear by relatives for Christmas, or am I reading too much into there?