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