Psycho
Complete the game in Rorschach mode.
36 ✓ May 15th, 2009
Teamwork
Complete the game in co-op mode.
36 ✓ April 21st, 2009
Shield
Dodge or block 25 incoming attacks.
8 ✓ April 21st, 2009
Strong Arm
Knock 100 people over, by throwing other people into them.
8 ✓ April 21st, 2009
Retaliator
Perform 200 counter attacks.
8 ✓ April 21st, 2009
Exterminator
Perform 250 finishing moves.
8 ✓ April 21st, 2009
Vigilante
Eliminate 20 bad guys in 101 seconds.
8 ✓ April 26th, 2009
Hero
Complete the game in Nite Owl mode.
36 
Thief
Find all abilities and pickups in Rorschach mode.
15 
Detective
Find all abilities and pickups in Nite Owl mode.
15 
Untouchable
Go unharmed for an entire level, without restarting from a checkpoint.
11 
Turbo
Complete the game in less than 80 minutes in one session, without restarting from a checkpoint.
11