I've passed the whole pack, so I can review any level.
Garjen01 - Level 5: Get Deeper and Down
Number of Lemmings: 50
Save: 100%
RR: 99
Time: 4 minutes
Skills: 1 builder, 1 basher, 3 miners
Good: Good scenery. High RR makes the level a little harder.
Bad: This was easy, and I think (like most of this pack) that my solution was a backroute. (a builder and a miner left over, and it took me less than a minute)