Unlike @Ray Aznable, I didn't feel rushed. I simply sent B up the second time the lift went up and then waited for R to come up to step on his head. What I didn't like was that there were a couple instabilities in the level: namely B walking over a slider end (which can lead to him falling) and R turning such that his head would no longer fit down the hole. So yeah, the level could be much improved. What I did like though was the creativity in the idea behind the game. Seeing it from your perspective I can see the fun factor between B and R. I hope you can bring out more fun elements in your future levels.