Invincibility shield: Press Up + Select.
Smart bomb: Press Right + Select.
Rapid fire: Press Left + Select.
Homing bombs: Press Down + Select.
All keys: Press L + Select.
Invincibility Shield: Press Up + Select.
Smart Bomb: Press Right + Select.
Rapid Fire: Press Left + Select.
Homing Bombs: Press Down + Select.
All Keys: Press L + Select