Then I'll have to comment on a few more
Level 17 was, indeed, a beast of a level.... with the terrain so dark you couldn't see where the gaps were, keeping the lemmings contained was
hard. I'm afraid I cheated a little by taking an over-the-top route.... I don't think you'd have enough builders to do it the proper way. Could be wrong though. Oh, and I got the 100%.
Level 21 was fun! Interesting challenge to sort out a route, but of course made a little bit easier by being able to make everyone a floater
Level 22 I didn't enjoy..... it was just a no-frills version of "Time to get up!" with an annoying time limit.
Level 23 was interesting..... quite a tough challenge to get 100% on this one.