Hi :)
Noo, so we messed up explaining the game enough ;_; sorry. You didnt even see the better levels then.
Jumping on the yellow enemies will bounce you off, that way you can reach higher places than you normally would.
In the first level you can possess the first the enemy to move him to the right, under the before unreachable small cliff. That way you can reach the exit and go to the next level.
Feel free to give it another try :p
Thanks for playing though!