| Achievement | How to unlock |
| A La Mode (25 points) | 5 scoops of everything.
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| Anger Management (10 points) | Get emotional.
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| Beat Cop (10 points) | Beat your way through a mission.
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| Big Game Hunter (10 points) | Get up close and personal with the antler.
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| Brick Wall (10 points) | MP - Block it away.
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| Bloodshot (25 points) | Unlock all Bloodshot Fight Clubs.
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| Bum King (30 points) | No guns, no problem.
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| Can You Hear Me Now? (30 points) | Emitter Removal Service.
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| Chain Gang (30 points) | Use all chain attacks a few times.
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| Cut Throat (30 points) | Finish it.
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| Chief Investigator (50 points) | Complete all missions in Hard mode.
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| Collector (10 points) | Scan the MP goodies once, twice, thrice - and more.
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| Decisive Restraint (25 points) | Restraint is a virtue.
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| Defender (25 points) | MP Defense 10 times over on the evidence.
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| Detective (30 points) | Get through a mission in FPS.
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| Detective - First Grade (50 points) | Shoot your way through it all in FPS.
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| EPA (Environmental Pwnage Area) (25 points) | Grab your foes by the neck and do what's necessary.
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| Flambe (25 points) | Splash, Shock and Fry.
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| Gold-Plated (50 points) | Go gold in all missions.
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| GOOOAAALLLL! (10 points) | Use the foosball table piece to your advantage.
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| Investigator (25 points) | You took on the hardest and beat them at their game.
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| Just The Facts (25 points) | MP Crime Scene Goodness.
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| Master Investigator (30 points) | PERFECTION as a sleuth all the way through.
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| Magellan (25 points) | Explore all maps more than once.
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| MP Overachiever (50 points) | Win a Deathmatch game with 15 kills without dying.
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| Punch Drunk (10 points) | MP - Duke of Queensbury Rules Only.
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| Self Medicated (25 points) | Heal thyself, physician.
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| Restraint... Not (30 points) | Win Crime Scene games as SCU without firing a shot.
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| Rush Champ (25 points) | Take SCU out with the trash 5 times.
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| Serial Killer (50 points) | Go kill, kill, kill in MP.
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| Sidekick (10 points) | Assist in scanning evidence in Crime Scene mode.
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| SKX (50 points) | Kill the killers.
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| Sleuth (10 points) | Be the PERFECT sleuth.
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| Survivor King (30 points) | Bum Rush Survivor multiple times.
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| The Plumber (25 points) | Find a pipe and use it frequently.
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| Trooper (30 points) | Complete the single-player game.
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| Tune In Tokyo (30 points) | Tune in all those TVs.
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| The Final Word (10 points) | You never forget your first time.
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