Level twenty-one is tiny, but not very fast for completion room.
Step by step solution
Go UP, UP, UP, push RIGHT and RIGHT. Go DOWN, DOWN and push RIGHT. Go DOWN, LEFT and push LEFT.
Go UP, LEFT, UP, UP, RIGHT, RIGHT, DOWN and push LEFT. Go DOWN, DOWN, RIGHT and push RIGHT.
Go UP, push LEFT, go DOWN and push LEFT. Go RIGHT, UP and push LEFT. Go DOWN, RIGHT and push RIGHT. Go UP, RIGHT, UP, UP, push LEFT, LEFT and LEFT.
Go DOWN, DOWN, push RIGHT, go DOWN and push LEFT. Go RIGHT, UP, push LEFT, go UP, UP, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN and RIGHT.
Congratulations. You have completed MazezaM twenty-one. You are now going to MazezaM twenty-two.