Below you will find all the cheat codes available in Puyo Puyo Tetris. PS4 controls are in parenthesis.
Enable Win Counter (Multiplayer Only)
Hold R (R1) and ZL (L2) then press Down (Down), X (Triangle), Y (Circle)
Highest Difficulty AI
Hold L (L1) then press Y (Circle)
Unlock All Characters And More
Hold L (L1) and R (R1) then press Up (Up), Down (Down), Right (Right), Left (Left), X (Triangle), B (X), Y (Square), Y (Square).