What's a level that you DESPISE? A level that took longer than you anticipated? A level you never want to play again?
This can count for any Lemming game.

I will admit mine, and I'm NOT afraid to admit it. I am embarrassed though.
It would have to go to Level 13 of Lemmings 1, A.K.A "We all fall down". I've spent WAY too much time on this dumb level. It doesn't make much sense IMO. I literally had to replay this level over 5+ times. all would go through the portal, and one would always fall to its doom. What sucks is that you have to get 100% of the lemmings through the exit. so having around 98% ain't gonna cut it.
And I'd ALWAYS forget to press "digger", so when I click on it, it wouldn't even apply the job to the . 
this is my fault though..

Yeah...

What Lemming level do YOU hate the most? this can apply to any game.