Story - Complete level 1 in solo mode.
Story - Get a 4 Star global ranking at the end of all levels in solo mode.
Story - Complete the last level in Crazytrain difficulty.
Arcade - Get an S ranking at the end of level 1, on any difficulty setting.
Arcade - Get an S ranking at the end of level 2, on any difficulty setting.
Arcade - Get an S ranking at the end of level 3, on any difficulty setting.
Arcade - Get an S ranking at the end of level 4, on any difficulty setting.
Arcade - Get an S ranking at the end of level 5, on any difficulty setting.
Arcade - Get an S ranking at the end of level 7, on any difficulty setting.
Story - Complete level 1 in co-op mode.
Arcade - Get an S ranking at the end of level 6, on any difficulty setting.
Arcade - Perfom 500 headshots in Slomo.
Arcade - Get the "All enemies killed" bonus at the end of each level, on any difficulty setting.
Arcade - Kill 25 enemies in one game while in Slomo in level 5, on Abnormal.
Arcade - Get the golden AK-47 once in all levels, on Abnormal.
Arcade - Beat the 2,100,000 point score at the end of level 2, on Crazytrain.
Arcade - Beat a fast-forward time of 1 min 05 sec in level 6, on Normal.
Story - Kill Kim Bong Sik, without getting hit by his projectiles.
Story - Kill Teniu the Grave, dodging all the crates.
Story - Kill Bloodshot avoiding all his melee attacks and slapping his face everytime you can.
Story - Complete the last level in solo mode.
Story - Find and shoot all the hidden objects in the game in solo mode.
Story - Perform 3,000 headshots in solo mode.
Story - Perform 200 nutshots in solo mode.
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