Jump, jump, jump, jump small steps, take a rainbow bath in the final toilet, and you will enter the next level.
You can move left and right, jump, and the length of time the jump key is pressed determines the height of your jump, no need to consider the charge. Enemies can be trampled upon falling, if this enemy can be trampled to death. If the wall allows climbing, you can jump against the wall. Press the up and down keys to climb the ladder, and the space bar to jump off the ladder.