Lemmings/Tricky Levels 21-25

Level 21: All the 6's...
This level isn't included in Lemmings For Windows.

Level 22: Turn around young lemmings!

 * 5 minutes, 90% of 80 lemmings, release rate 88

Choose a spot, and bomb the first and fourth lemmings as they pass that point. Build a ramp out of the resulting pit, so the turning lemmings can climb out to the exit.