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