Do a wall hop to climb up the floors, every 3 floors the difficulty gets harder and there is a different object. Black is a lot longer and has different things from before. If you don't know how to do a wall hop, it's a glitch. To do it, jump into the space between the white block and the snow, and you will be standing on the very edge of the snow block. Some walls aren't meant to be climbable and you have to try climbing on something thats in front of it.