OK, here are the screenshots of some of my levels, together with the skills/stats info!
(note: there's a hidden boulder trap to the left of the mound under the exit)
The Corridor of Death
Save 25 of 50, RR 1, 4 minutes, skills 10-10-10-10-5-10-10-10
Rating: Fun
The Three Tools of Death
Save 50 of 50, RR 1, 2 minutes, skills 1-1-1-1-5-1-1-1
Rating: early Taxing
We'll meet again
Save 9 of 10, RR 1, 1 minute, skills 0-1-1-1-1-0-0-5
Rating: late Fun
Lemming Dilemma
(remove the block indicated with the arrow)
Save 10 of 10, RR 1, 1 minute, skills 0-0-1-1-5-0-0-5
Rating: Taxing
Cooperation
Save 30 of 60, RR 50, 6 minutes, skills 10-10-10-10-20-10-10-10
Rating: Fun
Up on the Roof
Save 2 of 2, RR 99, 3 minutes 30 seconds, skills 1-0-0-0-10-0-3-3
Rating: late Taxing
The Two Towers
Save 25 of 50, RR 50, 5 minutes, skills 1-1-1-1-1-1-1-1
Rating: Fun
Zorn's Lemming
Save 48 of 50, RR 50, 5 minutes, skills 10-1-1-1-4-0-0-10
Rating: Mayhem
Lift us up where we belong
Save 10 of 10, RR 1, 3 minutes, skills 1-1-1-1-3-0-3-0
Rating: Tricky
Just a Minute (Part Four)
Save 80 of 80, RR 10, 1 minute, skills 3-0-3-0-0-3-0-3
Rating: Taxing
From the Other Side
Save 30 of 40, RR 1, 3 minutes, skills 3-0-2-2-3-1-0-1
Rating: early Taxing
The Lemming Tower of Pizza
Save 12 of 30, RR 1, 1 minute 30 seconds, skills 20-0-10-0-3-0-0-0
Rating: Mayhem
Vignette
Save 100 of 100, RR 95, 1 minute 30 seconds, skills 0-0-0-2-5-0-0-2
Rating: Taxing
Behind Bars
Save 6 of 10, RR 1, 3 minutes, skills 3-6-3-0-3-1-0-0
Rating: Mayhem
Just a Minute (Part Five)
Save 100 of 100, RR 10, 1 minute, skills 2-0-2-0-0-7-0-7
Rating: Mayhem
Rhapsody in Blue
Save 77 of 80, RR 70, 4 minutes, skills 2-2-2-2-2-2-2-2
Rating: late Mayhem