Here is the things going on in each level.
1. Lava jumping:easy
there are different sized platforms over evil lava. The goal is to think fast because the platforms sink
2. Arrow towers:medium
There are rows of towers. They fire similtainiosly from bottom to top. This focuses on being careful and timing.
3. Cloud jumping: hard
you are launched in the sky and forced to skip along trampoline-like clouds. One false step and you are a dead.
4. Rocket jumping: oh forget make it stop hard
People have the hardest time on this one. When you step on a red panel a rocket is fired at your feet. The goal is to use the explosions to superpower your jumps. This is about extreme perfect timing and being careful.
5. Speed running :easy
You are in a tunnel. You are running. The floor is constantly falling from beneath your feet. You better hurry the forget up.
6. Deja-vu hall: easy-medium
You take a left, another left, and a other left. You pass the same path over and over again. It makes no sense, it defies logic, but there is a way out