Thanks for playing! I did a bad job going from level 3 to level 4 since the difficulty increased too much. So the level will trick the player into thinking it is impossible, I should have had arrows and icons to show what controls what, but one button made the door open, stepping away makes it fall and you don't have enough time to hit the other button in order to keep the door up. But if you don't open the door all the way and quickly go to the other button, the door will be in the air longer than if you just let it fall, since it has to slow down and fall down again you have just enough time to hit the other button. I didn't have much time to make that many levels anyways but I really appreciate your feedback!