Share your roadblocks!

[geoo]

Ok, I found a solution for "Let's go camping" sending three lemmings down.
It's pretty clean, so I suppose it is the intended one. Very elegant, actually.
Before finding this one, my previous strategy was only one or two pixels short of height for the final bridge, as timing forced me to start building near the bottom of the tent. This solution however would have employed the block hanging in the air near the tent, which I see no use to.

EDIT: Ah, ccexplore is back! Though I suppose our solutions are identical, if we both dare labeling them 'intended' solution.

Obviously there's also solutions sending down none and one, and I sort of found also a solution sending down two, though it's pretty cheap, delaying the second lemming at the top till all work is done, and then having him come down just for the sake of it. My attempt at a proper solution had the same problem as my first attempt at sending down three: a few pixels too low at the end.

[Akseli]

My roadblocks are from PC DOS version, and they are mostly same than the aforementioned levels.

Lemmings:

Tricky 19: Postcard from Lemmingland - I can't remember playing this level, but levelcodes in my old levelcode paper stops in this level in Tricky rating, so it had to be some kind of a roadblock for me too.
Tricky 23: From The Boundary Line - This one was freaking hard! I passed Taxing all the way to level 26 and Mayhem at least to 13 before beating this. I had problems with RR 99 and the pit, from where you can't get up with that single builder. When I last played L1 marathon, this was the first level in the whole game I had to restart and I'm quite sure I had to give it at least third try to pass it.
Taxing 13: Upsidedown World - I remember this one being really demanding but I can't recall how long it took to solve this.
Taxing 26: Triple Trouble - I can't remember "Call in the bomb squad" and "POOR WEE CREATURES!" from my childhood, and this memorable level is the reason for that. Assigning skills to lemmings facing the correct direction caused troubles for me, and I think that I always wasted too many builders.
Mayhem 13: The Great Lemming caper - I can't remember this level either from my childhood, levelcode paper stopped in this level. But I remember that I was very satisfied when I beated this for my first time about 9 years ago!

Oh No! More Lemmings:

Crazy 10: ROCKY VI - Yes, solving this took long... Maybe even longer than solving all the Wild-levels! (I'm not 100% sure about that, I derived it from the old levelcode paper. )
Crazy 16: Across the Gap - Insanely hard level when I was a kid. 100% requirement and few builders caused troubles. This level is like a counterpart of Tricky 23 for me being such a tough level in the second-lowest rating in the game.
Wild 3: Lemmings Rhythms -  This is the hardest level in Wild rating for me.
Wicked 2: Inroducing Superlemming and Wicked 3: This Corrosion - These both levels were very tough barriers for me preventing access to the later Wicked levels. In Wicked 2, I always got my lemming knocking his head to the ceiling and turning to his death at the end of the level before finding the solution. I always solved Wicked 3 using the left path, and I was really amazed when I found the right path solution in autumn 2010!
Havoc 5: There's madness in the method - The greatest roadblock of all time for me in Lemmings games. Never thought that you needed to multitask with those basher and miner lemmings at the left part of the level. One day I gave up and searched the levelcodes from the Internet for the rest of the Havoc. I also found Havoc 15-20 extremely difficult.

I've played other Lemmings games for my first time so recently that no one level became a real roadblock for me, even though there are many levels that would have easily been such a thing for me if I would have played them when I was a kid.

[mobius]

I had DOS when I was a kid.

now use miners and climbers - when I first played I think I didn't look at the skills and see the miner right away so I was stumped on this for a little while

worra lorra lemmings - It was just generally 'taxing' for me and I usually ended up messing up right near the end so I had to start over so many times I eventually gave up and stopped playing.

Lemming Drops - same as above

Postcard from Lemmingland - This is the roadblock which prevented my solving the game until I was a teenager.

From the Boundary Line - I just couldn't think of the possibility that you need to lose a lot of the lemmings in the beginning.

The Prison - another just taxing level I never really liked much

Steel Works - I had no problem with the first part (taking care of the high up entrance) the building was difficult. i always ran out of builders  " title="Angry" class="smiley" />

the great lemming caper - a tough puzzle level for me, though I liked this one a lot.

no added colors or lemmings - same as above

A lot from ONML. Notably; Lemming Express, And now the end is near (for reasons I mentioned in another thread; Windows version makes it hard), Lemming Rhythms, It's a tight fit. Lemming Tomoato Kechup Facility, Pop your top(s).


Lemmings Revolution;
How do we get up there?

Can't get there from here - I actually solved this level before solving 'Time to get up!' in OL, so after wooping this level I went back and solved that. (discovering the climb/bomb trick)

Bridges - the thing with acid lemmings walking on an empty pool is just weird and not at all logical imo so I had trouble figuring this out.

Just you wait, My Finest Moment, Nice Shootin' Tex, Hit n Run, Don't Let Them Out!...

[Akseli]

Maybe I'll complete my roadblock list a little more because I realized that there are official levels that I haven't even passed yet! These games I've played for my first time this year except Lemmings Revolution which I played as kid as well as L1 and ONML, so these aren't super roadblocks (like in my L1 and ONML list), and they didn't stump me more than two days (except Lemmings Revolution levels).

Xmas & Holiday Lemmings (DOS):

Hail 5: Get the Point? The only christmas level which stumped me really.  I had to think this over a night and I ended up with a solution in which I builded from the ice peak and turned the builder with a blocker and then released the blocker with digger or something..

Genesis/Megadrive levels (played in Lemmix):

Taxing 2: Temporary peace - The first Genesis level I had to try many many times. I used brute-forceish pixel perfect execution strategy and didn't notice the wood sticks above the entrance..
Sunsoft 24: Out, away from the tune - Like geoo, at first I overlooked bashing the third note.

Lemmings 2 (DOS):

After getting used to the gameplay I golded all the levels in about 4 days except...
Sports 10: Take up Archery - What the...?! My best solution for this gives me silver. I still haven't golded this, I always get frustrated with this most annoying Lemmings level ever. Lol I have to nail this level someday myself!
Other Lemmings 2 levels which I had to think longer were Highland 4: A mere stone's throw and Sports 7: The Sun Sign Selection. They were strange for me, too.

Lemmings 3 (DOS):

Classic 4 - This was a tough puzzle for me when I was just getting used to the gameplay.
Classic 24 - Executing the solution and time limit caused me some difficulties.
Egypt 22 - I don't know why this took also a while to solve.
Shadow 18 - The grenade level. For me the biggest roadblock in L3 since I played both Classic and Egypt tribes through before passing this.

Lemmings Revolution:

12-5: No clues... hee hee hee! - I beated this level using reset a bomber glitch for getting access to the laser gate. I thought that the level had some kind of a mistake like "'Tanks' a Lot" in the older patch.
12-14: It's Going to Take Time - A massive level with lots of multitasking.
I still haven't beated two Revolution levels, they are: 12-9: Turn on! Tune in! Switch on! and 12-11: My finest moment - Seriously, I have to try those again some time. 

[mobius]

Lemmings Revolution:

12-5: No clues... hee hee hee! - I beated this level using reset a bomber glitch for getting access to the laser gate. I thought that the level had some kind of a mistake like "'Tanks' a Lot" in the older patch.
12-14: It's Going to Take Time - A massive level with lots of multitasking.
I still haven't beated two Revolution levels, they are: 12-9: Turn on! Tune in! Switch on! and 12-11: My finest moment - Seriously, I have to try those again some time. 

Me and GuyPerfect found  100%+glitch free solution to No Clues

(in case you didn’t know and wanted to do this yourself; you guide the weasels to flip the laser gate!)

It’s pretty ingenious I think, but I think the intended solution to No Clues is to just let the lemming that trips the laser gate die.

I have one level that I haven’t beaten yet in Revolution. “Don’t Let Them Out”. Everything I read says that you need to bash under the one-way-wall. This always seems like a backroute to me and I’ve always thought they forgot one basher. With one other basher it would be possible (I think) to go around and do what seems like the correct way. The only way I’ve seen it solved utilizes the ‘build through a thin floor glitch’.
[I lied, I have beat that level before (years ago in another 'playing']

Those last two are both good (and very hard) levels.
My finest moment has the “'Tanks' a Lot" mistake but it can still be solved a few different ways.
the other one has a really neat solution but I don’t remember exactly how I solved it. I always forget on that one and it’s not on the fun part. Getting to the fun part is difficult.