Deathsmiles

Unlocking Canyon Stage:
Insert coin
Player 2: Hold down A, B & C
Player 1: Press C, C, C, A, Up, Left, Right, Down, B, C, C, C, Down, Down, A, B, C, B, A

Unlocking Follett:
Insert coin
Player 2: Hold down A, B & C
Player 1: Press Up, Up, Up, Up, B, B, A, A, Left, Left, Right, Right, C, C, C, Down, C

Unlocking Rosa:
Insert coin
Player 2: Hold down A, B & C
Player 1: Press C, B, A, C, B, Up, A, Right, C, Left, B, Down, C, B, A, A, A