Fun concept, a sort of 'lemmings' x 'dungeon keeper'. But it's really easy for us to unbalanced the level. 2 spikes in a row and the guys die. A way to balance it could be to use the corpse of dead trap as new tiny platform, or make damage to traps each time they kill someone.
Otherwise the graphics and music was good. Some more SFX can help too (death, bump, etc..).