Destroy 5000 enemies.
Complete Mission V with the orange mech.
Complete Mission III with the drill mech.
Kill the Spider Queen in less than 20 seconds.
Complete Mission I with the blue mech.
Destroy 500 enemies using the melee attack.
Complete any mission without dying.
Complete the Boss Rush Mode.
Destroy 4 enemies using a single particle beam shot.
Destroy 4 enemies at once using the grenade launcher.
Collect 100 weapons.
Destroy 6 enemies in a row using the charged particle beam.
Destroy 3 enemies at once using an explosive barrel.
Use the energy whip to collect an item.
Complete the game using any melee character.
Complete the game in Mirror Mode (any difficulty level).
Use the melee attack to finish Commander Zet off.
Destroy 1500 enemies.
Hang on the Gunship during Mission 1-3.
Collect 50 battle bots.
Complete the game in EASY mode.
Complete the game in NORMAL mode.
Complete Mission VI.
Destroy 100 enemies using the melee attack.
Destroy your holographic clone on the final boss stage.
Find the hidden 1UP on Mission 6.
Destroy the Gorilla Boss's legs after defeating him.
Use the melee attack to deflect missiles and grenades from enemies.
Complete Mission V.
Complete Mission IV.
Get all the weapon upgrades on the 3D Tunnel Stage.
Complete Mission III.
Destroy 500 enemies.
Complete Mission II.
Complete Mission I.
Finish any boss off using the melee attack.
Destroy 10 enemies using the melee attack.
Complete the game in HARDCORE mode.
Complete the game in less than 40 minutes in normal or hardcore mode.