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