Defeat Launcher Crab In Arcade With Lt. Striker.

Defeat Queen Beetle In Arcade With Lt. Striker.

Defeat The Liyx Central Intelligence System In Arcade With Lt. Striker.

Defeat Junk Champion In Arcade With Lt. Striker.

Defeat Reanimator In Arcade With Lt. Striker.

Defeat The Biostation Defense System In Arcade With Lt. Striker.

Beat Arcade On The Easy Difficulty.

Beat Arcade On Easy, Without Using Any Continues.

Beat Arcade On Normal, Without Using Any Continues.

Beat Arcade Easy, With No Deaths.

Beat Arcade Normal, With No Deaths.

Beat Miniboss Rush On Hard Difficulty.

Beat Miniboss Rush On Very Hard Difficulty.

Beat Boss Rush On Hard Difficulty.

Beat Boss Rush On Very Hard Difficulty.

Beat Boss Rush+.

Clear Arcade Very Hard With Doom Timer Modifier Enabled.

Beat Arcade Hard Under 50 Minutes.

Beat Arcade Very Hard Under 50 Minutes.

Beat Arcade Hard Under 40 Minutes.

Beat Arcade Very Hard Under 40 Minutes.

Obtain A Score Of 20 Million.

Beat Arcade Hard With Ninja.

Beat Arcade Hard With Cpt. Bone.

Beat Arcade Hard With Mini Champ.

Beat Arcade Hard With Parasite.

Beat Arcade Hard With No Armor.

Beat Labyrinth On The Easy Difficulty.

Beat Labyrinth On The Normal Difficulty.

Live Long Enough To Die While Fighting Omega Parasite.

Complete Arcade Mode In Multiplayer.

Complete 10 Challenges.

Complete 20 Challenges.

Complete 30 Challenges.

Complete 40 Challenges.

Complete 50 Challenges.

Complete All Challenges.

Complete All Challenges With A Rank.