Pause the game, and press one of the following button sequences. A sound effect will confirm correct entry.

Effect	Code
Gain a Life	B, C, B, B, Down, Up.
Gain Breaker Weapon	C, Up, B, Up, B, A.
Gain Cannon Weapon	Left, Up, Left, B, B, C.
Gain Grenade Weapon	Down, Up, Down, Right, B, C.
Gain Kinghell Weapon	Right, Left, Left, C, A, A.
Gain Lock-on Weapon	A, A, Left, Left, Left, Right.
Gain Piercer Weapon	Down, Down, Up, Up, B, C.
Gain Rapid Weapon	C, Down, C, Left, Left, C.
Gain Red Key	Up, A, A, C, Down, Down.
Gain Ricochet Weapon	Right, Right, C, C, A, B.
Gain Slip Rate	Up, A, Up, A, A, Down.
Gain Spray Weapon	A, A, Down, A, C, A.
Gain Tri-bolt Weapon	A, B, B, Left, B, Right.
Gain Yellow Key	Down, C, B, A, A, Down.
Refill Ammo	B, A, B, Left, Right, Left.
Refill Health	Left, Left, A, B, Left, Right.
Stage Skip	Up, A, Up, A, A, Down.