Chief Investigator
You mastered it all on the hardest setting
50 ✓ January 16th, 2010
Detective - First Grade
Unlimited ammo is your friend thoughout the game
50 ✓ January 16th, 2010
Gold-Plated
Gold times Eleven
50 ✓ January 15th, 2010
MP Overachiever
You've won a Deathmatch game with 15 kills without dying.
50 ✓ April 12th, 2008
Can You Hear Me Now?
You've removed all emitters
30 ✓ January 15th, 2010
Chain Gang
Each level of chain attack has been executed a number of times
30 ✓ March 21st, 2008
Detective
Unlimited ammo is your friend for a mission
30 ✓ April 9th, 2008
Master Investigator
You earned every point possible in Evidence Mode
30 ✓ January 15th, 2010
Trooper
You've been through all missions
30 ✓ March 21st, 2008
Tune In Tokyo
You've tuned in all TVs through all missions
30 ✓ January 15th, 2010
Cut Throat
You've performed 25 finishing moves to take out your opponents.
30 ✓ April 12th, 2008
Decisive Restraint
No guards were killed in the City Museum.
25 ✓ March 17th, 2008
Bloodshot
You unlocked all Bloodshot Fight Club Arenas
25 ✓ March 18th, 2008
EPA (Environmental Pwnage Area)
You've half-nelsoned your way to success
25 ✓ March 17th, 2008
Flambe
Earned with the liquor burn method
25 ✓ January 1st, 1753
Investigator
You took on the hardest and beat them at their game
25 ✓ April 9th, 2008
Just The Facts
You've collected the evidence 10 times
25 ✓ April 12th, 2008
Magellan
You've played each map several times over
25 ✓ April 12th, 2008
A La Mode
You've tasted each Multiplayer mode 5 times.
25 ✓ April 10th, 2008
The Plumber
Your pipe is your friend
25 ✓ March 17th, 2008
Rush Champ
You've defeated the SCU 5 times in Bum Rush
25 ✓ April 10th, 2008
Self Medicated
You've bandaged your wounds
25 ✓ March 14th, 2008
Brick Wall
You've blocked incoming attacks 5 times.
10 ✓ April 9th, 2008
Collector
You've collected the evidence 5 times
10 ✓ April 12th, 2008
GOOOAAALLLL!
The foosball piece was used successfully - again and again
10 ✓ March 18th, 2008
Punch Drunk
Fist Fight! Fist Fight!
10 ✓ April 9th, 2008
Sleuth
You earned a PERFECT with your investigative skills
10 ✓ March 14th, 2008
Sidekick
You've assisted in scanning evidence in MP
10 ✓ April 12th, 2008
The Final Word
You completed your first environmental finishing move.
10 ✓ March 12th, 2008
Anger Management
You've expressed a wide range of emotions
10 ✓ March 13th, 2008
Beat Cop
You've taken on a mission and survived
10 ✓ March 13th, 2008
Big Game Hunter
The antler was used with success
10 ✓ March 18th, 2008
Serial Killer
You've killed 1000 players in MP
50 
SKX
Just like SKX, you've killed 9 serial killers. (Other players with the serial killer achievement)
50 
Bum King
You survived 5 Bum Rush rounds as SCU without firing a shot
30 
Restraint... Not
You've won 10 Crime Scene games as SCU without firing a shot.
30 
Survivor King
Bum Rush Survivor 5 times
30 
Defender
You've defended the goodies ten times over
25