Cheat Mode
Press L, R, Right Analog-stick Up, Right Analog-stick Down, L, R, Left Analog-stick Up, Left Analog-stick Down, L, R, D-pad Up, D-pad Down at the Capcom Classics Collection title screen. The message 'All Locks Open' will appear at the top of the screen to confirm correct code entry. All bonuses in all games will be unlocked. Additionally, when playing Ghosts N Goblins, Ghouls N Ghosts, or Super Ghouls N Ghosts, press Right Analog-stick Left or Right Analog-stick Right to access any weapon.
Ghosts and Goblins: level 6
When you are on level 6, use only the shield as your weapon or it will throw you back to the beginning of level 5 saying that there is no effect for your weapon.