Great game. Helps a lot with my strabismus issue. I think I found the "secret ending," you get the third power up (allowing you to jump off walls three times), and then you work your way backwards to the beginning of the course where there's a room you can jump through the top by hopping off the walls (it's literally like the fourth room, titled "another way?") There's another power up titled "do not touch" in a hidden room which causes everything to shake (similar to the last rooms when playing normally). Makes it super hard to beat the game. Not sure if it does anything except change the colour and ending text though. I wonder if there are other easter eggs...