Complete the following achievements to unlock Xbox Live Gamerscore points.
| Unlockable: | How to Unlock: |
| Anti Air (15 points) | Bring down the Chopper. |
| Anti Hero (25 points) | Complete game on normal setting. |
| Bringing People Together (5 points) | Trap 5 enemies within a Black Hole. |
| Bullet Dodger (20 points) | Finish a multiplayer match with less than 5 deaths (minimum of 4 players). |
| Butcher (25 points) | Claim 20 Killing Streaks in multiplayer. |
| Cannibal (25 points) | Devour 300 enemies. |
| Completionist (20 points) | Unlock 100 collectables. |
| Contract Killer (25 points) | Be on the winning side in 50 multiplayer matches. |
| Darkness Master (100 points) | Only for those who are completely in tune with the Darkness. |
| Executioner (10 points) | Kill 25 enemies using execution moves. |
| Fashionable (25 points) | Collect all the Darkling outfits. |
| Flag Owner (10 points) | Capture 50 flags in a CTF match. |
| Flag Runner (5 points) | Capture 20 flags in a CTF match. |
| Gatherer (5 points) | Unlock 25 collectables. |
| Ghandi (10 points) | Find a peaceful solution. At least momentarily. |
| Gunner (15 points) | Kill 30 enemies using Darkness Guns. |
| Gunslinger (25 points) | Kill 7 enemies within 15 seconds. |
| Hard to Kill (5 points) | Take enough damage without dying within a multiplayer match. |
| Heart of Gold (50 points) | Help those in need. |
| Henchman (15 points) | Be on the winning side in 20 multiplayer matches. |
| Hoodlum (5 points) | Be on the winning side in a multiplayer match in any of the multiplayer modes. |
| Knuckle, Meet Face (5 points) | Perform a melee kill for the first time. |
| Legendary Dark (35 points) | Complete game on hard setting. |
| Legendary Executioner (20 points) | Kill 50 enemies using execution moves. |
| Legendary Summoner (25 points) | Summon 50 Darklings. |
| Made Man (35 points) | Be on the winning side in 100 multiplayer matches. |
| Mook (5 points) | Be on the winning side in 5 multiplayer matches. |
| Murderer (5 points) | Claim 20 Killing Streaks in multiplayer. |
| Patriot (5 points) | Capture a flag in a CTF match. |
| Picking Up Stuff (5 points) | Unlock a collectable for the first time. |
| Ripper (15 points) | Kill 30 enemies using Demon Arm. |
| Roadkill (10 points) | Kill the workers in the tunnel. |
| Rogue Killer (15 points) | Kill 15 enemies using Creeping Dark. |
| Romantic (10 points) | Real guys stick around for their ladies. |
| Summoner (5 points) | Summon 5 Darklings. |
| Take a Look at the Sky (50 points) | Take down 6 airplanes. |
| The Collector (10 points) | Unlock 50 collectables. |
| The Don (45 points) | Be on the winning side in 250 multiplayer matches. |
| The Obsessive Collector (15 points) | Unlock 75 collectable. |
| Up Close and Personal (5 points) | Perform an execution move for the first time. |
| Void Bringer (15 points) | Kill 20 enemies using Black Hole. |
Go to any pay phone and dial one of the following numbers. You will hear a message to confirm correct code entry.
Below a list of Unlockable Outfits...
| Unlockable: | How to Unlock: |
| Baseball Outfit | Dial 555-4263 at nearest train station. |
| Construction Outfit | Find Vinny Mortarello in the Fulton Street Station. There's an open window in an apartment building across from Shrote's building. The Construction Outfit is inside the room as well as Collectible #45. |
| Fireman Outfit | Find Jimmy the Grape in the Canal Street Station. Talk to him to activate the objective. Pete's in a nondescript apartment building down Grinder's Lane. It has a small parking lot outside. Pete's inside room 261. Break in and handle the enemys. Grab the Fireman Outfit. |
| Golfshirt Outfit | Dial 555-5664 at nearest train station. |
| Jungle Outfit | In Hunters Point Alley, it's inside the same room as Collectible #97. |
| Lumberjack Outfit | Find Dana Cutrone in Canal Street Station. Talk to her to activate an objective. You have to get her keys back from her boyfriend. Once in the apartment you'll find the Lumberjack Outfit . the room along with collectibles #4, 40 and 90. |
| Potato Sack Outfit | In Chinatown, there is a flashing object near the Darkling portal. Shatter the glass and grab the Potato Sack Outfit. Sitting against alley wall near metro exit. |
| Roadworker Outfit | At City Hall Station enter the train to grab the Roadworker Outfit. |
Sure, you've called every number you've found on those hard-to-get Collectibles, but you certainly haven't found all of the phone numbers. Chances are, you've overlooked a phone number or two without even knowing it as you ripped out a goon's heart. All 25 'secret' phone numbers are scattered throughout New York and can be seen on anywhere from flyers and storefronts to garbage cans and posters. Dial 18 of the 25 on a phone-in no specific order -to unlock the final secret of the game. :
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