Instructions is in the game. PS: If you want to change a character from a small/low one to a tall/big one, change while jumping. otherwise the character will get stuck in the ground.
thanks to @powerpuffgirlfan2 and @MehmetKab, I was able to make this. UPDATE LOG 1.0 created the actual game. 1.5 added a death counter. 2.0 added character specific levels.
