GRADIUS COLLECTION UNLOCKABLES
Gradius 3: Cube attack:
Survive until level 9.
Gradius 3: Extra mode:
Survive until level 9.
Gradius 3: Extra edit:
Finish the game. Select Extra Mode to access more weapons.
Gradius 3: Gradius level:
Intentionally get shot by the Final Boss.
Gradius 3: Salamander level:
Intentionally get shot by the Final Boss.
Gradius 3: Stage select:
Finish the game.
Gradius 4: Boss Rush mode:
Finish the game.
Gradius 4: Stage select:
Finish the game.
Gradius Gaiden: Stage select:
Finish the game under the normal or higher difficulty setting.