Damn this is so clever and... haaaard :') I've just completed the level with the stairs leading in the different rooms, and now I have four green guys I'm supposed to plan trajectories for, my brain can't handle that right now :'D
It's really well made, I'll pick it up again a bit later to try and complete more levels, but it kinda stresses me out that there isn't an "undo" function, since everything is so tight ^^' (Although I didn't put an undo button in my game either, so I'm not blaming you!)