This game was pretty fun. It was really all about the mechanics. I almost quit a few times but muscled through it and finished every level. The only real issues that made it more difficult were:
1. I guess I didn't realize the red triangles left your corpse, so I was suiciding either immediately before touching them or right after, which meant I would waste a guy. But after seeing what was happening, I stopped using the suicide.
2. The mechanics start to build, but at the end you don't use the suicide. It would have been cool to have a level at the end where you could use all of the mechanics you learned throughout the game.
One other strange thing was that a controller worked for movement, but not for jumping. So get the jump and suicide buttons and I think it would have been more fun to play with a controller.
I could see this being expanded to a bunch of levels for fun.
Well done!!!