Destroy 4 enemies at once using the grenade launcher.

Complete the game in NORMAL mode.

Destroy 500 enemies using the melee attack.

Destroy 1500 enemies.

Destroy multiple enemies using a single particle beam shot.

Collect 100 weapons.

Complete the game in Mirror Mode (any difficulty level).

Destroy 10 enemies using the melee attack.

Complete the Boss Rush Mode.

Destroy the Gorilla Boss's legs after defeating him.

Hang on the Gunship during Mission 1-3.

Complete Mission III.

Complete the game in EASY mode.

Destroy 500 enemies.

Find the hidden 1UP on Mission 6.

Complete Mission I.

Complete Mission IV.

Use the melee attack to deflect missiles and grenades from enemies.

Destroy 6 enemies in a row using the charged particle beam.

Complete the game using any melee character.

Complete any mission without dying.

Kill the Spider Queen in less than 20 seconds.

Complete Mission I with the blue mech.

Destroy 3 enemies at once using an explosive barrel.

Complete Mission V.

Complete Mission III with the drill mech.

Complete Mission V with the orange mech.

Complete Mission VI.

Destroy 5000 enemies.

Destroy your holographic clone on the final boss stage.

Complete Mission II.

Complete the game in HARDCORE mode.

Use the energy whip to collect an item.

Finish any boss off using the melee attack.

Get all the weapon upgrades on the 3D Tunnel Stage.

Destroy 100 enemies using the melee attack.

Use the melee attack to finish Commander Zet off.

Complete the game in less than 40 minutes in normal or hardcore mode.

Collect 50 battle bots.