Haben unsere Kollegen von Xbox 360 Achievements. Insgesamt gibt es 40 Erfolge für (welch große Überraschung) 1000 GS! Von diesen 40 Erfolgen sind 31 bereits bekannt, weitere neun sind geheime Erfolge und entsprechend noch nicht klar . Ebenso unbekannt ist bisher ob es für die Fälle die es bei diversen Händlern als Vorbestellerboni gibt ebenfalls Erfolge geben wird – Da diese laut Rockstar später als DLC erscheinen sollen ist jedoch davon auszugehen.
| Asphalt Jungle | 15 | |
| Chase down and tackle a fleeing suspect on foot as an LAPD Detective. | ||
| Traffic Stop | 15 | |
| Disable a suspect vehicle with help from your partner. | ||
| Not So Hasty | 15 | |
| Stop a fleeing suspect with a warning shot as an LAPD Detective. | ||
| Shamus To The Stars | 80 | |
| Complete all story cases with a five star rating. | ||
| The Brass | 30 | |
| Achieve maximum rank. | ||
| The Plot Thickens | 15 | |
| Find and solve an inspection puzzle. | ||
| Golden Boy | 15 | |
| Clear a case finding every clue as an LAPD Detective or Investigator. | ||
| The Straight Dope | 15 | |
| Use evidence to prove a lie as an LAPD Detective or Investigator. | ||
| One For The File | 15 | |
| Find and inspect a clue as an LAPD Detective or Investigator. | ||
| The City Of The Angels | 80 | |
| Reach 100% Game Complete. | ||
| The Up And Up | 30 | |
| Complete a story case with a five star rating. | ||
| The Long Arm Of The Law | 30 | |
| Complete all street crime cases. | ||
| A Cop On Every Corner | 15 | |
| Complete a single street crime case. | ||
| Johnny On The Spot | 30 | |
| Respond to 20 street crime cases. | ||
| Public Menace | 30 | |
| Rack up $47,000 in penalties during a single story case. | ||
| The Moose | 15 | |
| Follow Candy Edwards without using cover or incognito, except when starting or picking up the tail. | ||
| Star Map | 15 | |
| Discover all landmark locations around the city. | ||
| The Third Degree | 30 | |
| Correctly branch every question in every interview in a single story case. | ||
| The Hunch | 30 | |
| Use four intuition points in a single interview session, correctly branching each question. | ||
| Auto Fanatic | 30 | |
| Drive every vehicle in the city. | ||
| Hollywoodland | 30 | |
| Find and inspect all gold film reels. | ||
| Auto Collector | 15 | |
| Drive 40 different vehicles. | ||
| Keep A Lid On | 15 | |
| Complete a brawl without losing your hat as an LAPD Detective or Investigator. | ||
| Auto Enthusiast | 15 | |
| Drive 5 different vehicles. | ||
| Lead Foot | 15 | |
| Keep the needle above 80mph for more than ten seconds while driving. | ||
| Miles On The Clock | 15 | |
| Drive more than 194.7 miles. | ||
| Magpie | 80 | |
| Find and inspect 95% of all clues. | ||
| The Shadow | 15 | |
| Tail a suspect without being spotted, in a single case. | ||
| Roscoe And Friends | 15 | |
| Kill at least one bad guy with every gun. | ||
| Wooden Overcoats | 30 | |
| Bring down a total of 30 bad guys with head shots. | ||
| Dead Men Are Heavier | 15 | |
| Shoot and kill a total of 100 bad guys. |
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