Loss of Lemmings: Zero
The key to this level is getting down the ``ladder'' of chambers beneath the hatch.
Use a Twister for the first two steps by driving it partially into the pillar on the right, straight down, back left into the chamber and down through the floor. Use a Digger, a Bomber and a Stomper for the other three. Tunnel under the lake with a Basher. Fence through the house roof.