Cheat codes
Enter all codes at the main menu with "Arcade Mode" highlighted. (A tone confirms correct entry.)

Play as Damien Black
Press Right, Left, Right (x2), Left (x2), Right (x3), Left (x3).

Play as Kemo Claw
Press Left (x3), Right (x3), Left, Right, Left, Right.

Play as Nat Daddy
Press Right (x3), Left (x3), Right, Left, Right, Left