World sixty-nine is with many boxes. It is not hard, but false pushes are very common.
Step by step solution
Push UP, UP and UP.
Go RIGHT, DOWN, RIGHT, RIGHT, RIGHT, push UP, go DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT, RIGHT, push DOWN, go RIGHT, DOWN, push LEFT, LEFT, go RIGHT, UP, UP, LEFT, LEFT, DOWN and push DOWN.
Go UP, UP, RIGHT, RIGHT, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT and RIGHT.
Push DOWN, go RIGHT, DOWN, DOWN, LEFT, LEFT, push LEFT and LEFT. Go RIGHT, DOWN, DOWN, push LEFT, LEFT, go UP, LEFT, LEFT, LEFT and push DOWN. Go RIGHT, DOWN, push LEFT, go UP, LEFT, push DOWN, go RIGHT, DOWN, push LEFT and LEFT.
Go RIGHT, RIGHT, UP, RIGHT, UP, UP, RIGHT, RIGHT, DOWN, push LEFT and LEFT, go UP, LEFT, push DOWN, go RIGHT, DOWN, push LEFT, go UP, LEFT, push DOWN, go RIGHT, DOWN and push LEFT.
Go RIGHT, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, LEFT, UP, LEFT, push DOWN and DOWN. Go UP, RIGHT, RIGHT, DOWN, DOWN, LEFT, push LEFT, LEFT, LEFT, go DOWN, LEFT, and push UP.
Go RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, RIGHT, RIGHT, RIGHT, UP, UP, LEFT, push DOWN, DOWN, DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT and LEFT.
Go RIGHT, RIGHT, RIGHT, UP, UP, UP, UP, UP, UP, LEFT and push DOWN. Go RIGHT, DOWN, push LEFT, LEFT and LEFT. Go RIGHT, DOWN, DOWN, LEFT, LEFT, UP and push UP.
Go RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, RIGHT, RIGHT, UP, RIGHT and push UP. Push LEFT, LEFT, LEFT, go UP, LEFT, push DOWN, DOWN, DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT and LEFT.
Go RIGHT, UP, UP, UP, RIGHT, RIGHT, RIGHT, UP, UP, UP, push RIGHT, go DOWN, RIGHT, push UP, go LEFT, UP, push RIGHT and RIGHT.
Go LEFT, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, push DOWN, DOWN and DOWN.
Go LEFT, push UP, go LEFT, push UP, UP, UP, UP and UP. Go LEFT, UP and push RIGHT.
Go DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, DOWN, push LEFT, go DOWN, LEFT, push UP, UP, UP, go LEFT, UP, push RIGHT and RIGHT.
Go LEFT, DOWN, DOWN, DOWN, DOWN, RIGHT, DOWN, DOWN, LEFT, push UP, UP, UP, UP, UP, go LEFT, UP and push RIGHT.
Go DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, push UP, go LEFT and push DOWN.
Go UP, push UP, UP, UP, go DOWN, LEFT, LEFT, UP, UP, RIGHT, push RIGHT, go DOWN, RIGHT, push UP and UP.
Go DOWN, DOWN, RIGHT, DOWN, DOWN, push LEFT, go DOWN, LEFT, push UP, UP, UP, go RIGHT, UP and push LEFT.
Congratulations. You have completed world sixty-nine. Get ready for world seventy.