Bonus level:
Beat the game to unlock a bonus level.
Bonus items:
Unlock the following items by defeating the corresponding Bosses:
Blast Helm – Defeat Enforcer.
Inferno – Defeat Colossus.
Judgement – Defeat Enforcer.
Neutron Gun – Defeat the level 30 Boss.
Onslaught – Defeat the level 10 Boss.
Surge Helm – Defeat Mantin.
Trident – Defeat the level 60 Boss.
Vulcan – Defeat the level 20 Boss.