World three hundred and eighty-two is with only four boxes, but very unusual and hard.
Step by step solution
Go RIGHT, UP, RIGHT, UP, push LEFT, LEFT and LEFT. Go RIGHT, UP, UP, LEFT, LEFT, DOWN, LEFT, LEFT, DOWN, DOWN, RIGHT and push RIGHT. Go LEFT, LEFT, UP, UP, RIGHT, RIGHT, UP, RIGHT, RIGHT, DOWN, DOWN, RIGHT, DOWN, DOWN, LEFT, LEFT and push UP. Go LEFT, push UP and UP. Go DOWN, DOWN, RIGHT, DOWN, RIGHT, RIGHT, UP, UP, LEFT, UP, UP, LEFT, UP, UP, LEFT, LEFT, DOWN and push DOWN.
Go UP, UP, RIGHT, RIGHT, DOWN, DOWN, RIGHT, RIGHT, UP and push LEFT. Go DOWN, DOWN, DOWN, RIGHT, DOWN, DOWN, LEFT, LEFT, UP, LEFT, LEFT, LEFT, UP, UP and push RIGHT. Go UP, push RIGHT and RIGHT. Go LEFT, LEFT, UP, UP, RIGHT, RIGHT and push DOWN.
Go RIGHT and push DOWN. Push LEFT, go UP, UP, LEFT, LEFT, DOWN, DOWN, DOWN, LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, DOWN, RIGHT, RIGHT, UP, UP, LEFT and push UP. Go DOWN, RIGHT, DOWN, DOWN, LEFT, LEFT, UP, LEFT, UP and push RIGHT. Go LEFT, DOWN, LEFT, LEFT, UP, UP, RIGHT, UP and push RIGHT.
Push DOWN, go UP, LEFT, UP, UP, RIGHT, RIGHT, DOWN, RIGHT and push DOWN. Push LEFT, go UP, UP, LEFT, LEFT, DOWN, DOWN, DOWN, LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP and push RIGHT. Push UP, go DOWN, LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, RIGHT, UP and push LEFT.
Congratulations. You have completed world three hundred and eighty-two. Get ready for world three hundred and eighty-three.