Finish any boss off using the melee attack.
Destroy 10 enemies using the melee attack.
Complete Mission I.
Destroy 4 enemies using a single particle beam shot.
Destroy 6 enemies in a row using the charged particle beam.
Kill the Spider Queen in less than 20 seconds.
Use the melee attack to deflect missiles and grenades from enemies.
Get all the weapon upgrades on the 3D Tunnel Stage.
Complete Mission II.
Complete the game using any melee character.
Complete the Boss Rush Mode.
Complete the game in Mirror Mode (any difficulty level).
Complete the game in EASY mode.
Complete the game in NORMAL mode.
Complete the game in HARDCORE mode.
Complete the game in less than 40 minutes in normal or hardcore mode.
Complete Mission I with the blue mech.
Complete Mission III.
Complete Mission III with the drill mech.
Complete Mission V with the orange mech.
Destroy 100 enemies using the melee attack.
Destroy 500 enemies using the melee attack.
Collect 50 battle bots.
Collect 100 weapons.
Destroy 500 enemies.
Destroy 1500 enemies.
Destroy 5000 enemies.
Complete Mission IV.
Complete Mission V.
Complete Mission VI.
Complete any mission without dying.
Destroy 3 enemies at once using an explosive barrel.
Destroy 4 enemies at once using the grenade launcher.
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