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