Level 13 (26 moves)
L, U, R4, D4, L, U, R, U4, L, D, R, D5, L
Level 16 (24 moves) D, R, D6, L, U2, L, D, L2, U5, R3, U
Level 19 (15 moves) R, D, R, D, R, D, L, U2, L, U, R, D, R, D
The quickest solution is 6 moves: down, left, up, up, left, down. D L U2, L D
Level 17 (20 moves) D, R, U, L, D3, R, U3, L2, D, R, U, L, D, R, D
There are no level codes. You can select any level that you have already played as your starting point.
Level 12 (21 moves) (official video shows 23, silver) D, R, U, R, D, L, U, R, D6, L3, U, R, D, L
Level 18 (36 moves) D3, R, D2, L, U4, L, D, R, U, L, U, R, D2, L, U, R5, D3, L, D2, L, D, L
453 is the answer
sorry, no idea
sorry, no idea
Press shift five times rapidly.
count the numbers up to 453