Insert Coin Choose Lemming - Way too inaccessible for me, unfortunately. I tried a few things but nothing seems to work. I can get a lemming down the main drop safely but can't find a way to both secure the drop and get that lemming back over to the teleporter. No-solve.
Infiltration - Got closer with this one but couldn't solve it within the time I had available. I'll probably come back to this one because I could see a few possibilities.
The Four Corners Of Cloud Seven - Another one I can see a solution for but didn't have enough time to put it together. I'll come back to this one.
No Other Lemming's Gonna Do That! - Managed to make some progress with this but kept running out of skills. Another one I'll likely come back to for a final attempt.
Lemsicle - I thought I had this one cracked, but I can't see any way to get in position to bash underneath the blocker so this one's ultimately a no-solve.
Sports-tacular Athletic Rescue Mission - I'm happy to report that I managed to rescue 2 lemmings on this level, so it's the closest I've come to solving any of these!
I'll certainly come back and have another look at this one.