Perform a 6x combo
Perform a 4x combo
Unlock all achievements
Get an A+ on any chapter
Die 1000 times
Unlock all weapons
Use all melee weapons at least once
Collect all the puzzle pieces
Solve the Puzzle
Kill 1989 enemies
Destroy 200 glass panels
Kill 99 dogs
Go to the car 60 times
Complete chapter five barehanded
Use all throwing weapons at least once
Collect all the masks
Use all guns at least once
Hit two enemies with the same weapon in one throw
Get A+ on all the chapters
Perform every ground kill in the game.
Wear all masks at least once
Hit three or more enemies with the same weapon in one throw
Perform an 8x combo
Perform a 10x combo
Perform a 12x combo
Hit an enemy with a weapon bounced against a wall
Use a human shield
Throw a weapon at an enemy so that his weapon hits another
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