This achievement requires you to complete Episode 7. Here are the list of moves in correct order:
Level 7-1: D, R, R, R, R, D
Level 7-2: D, D, L, L, L, L, L, L
Level 7-3: R, R, U, R, D, D, D
Level 7-4: L, L, U, L, L, U, L, L, U, U
Level 7-5: D, D, U, U, R, U, L, L, U, R, R, U, L, L
Level 7-6: L, D, L, L, R, L, U, R, R, L, R, U, L
Level 7-7: D, R, U, U, D, L, U, R, D, D, L, U, R, L, L, U
Level 7-8: R, R, L, U, U, U, D, U, U, R, U, U, L, L, L, U, U, U, D, U, U, L, U, U, R, R, R, R