The Darkness (360)

Secret Phone Numbers
Use any phone in the game and dial these numbers to unlock secret achievements.
555-1037
555-1847
555-1206
555-1233
555-2309
555-2349
555-2402
555-3243
555-3285
555-3840
555-3947
555-4372
555-4565
555-4569
555-5289
555-5723
555-6118
555-6205
555-6322
555-6325
555-6557
555-6667
555-6893
555-6969
555-7613
555-7658
555-7892
555-7934
555-8024
555-8930
555-9132
555-9528
555-9562
555-9723
555-9898
555-9985

Unlockable: Darklings
555-GAME - Unlocks the 2k Darkling.
555-5664 - Unlocks the European Golfer Darkling.

Achievements
Anti Air (15) - Bring down the Chopper

Anti Hero (25) - Complete game on normal setting

Beginnings (25) - Complete the first part of the game

Bringing People Together (5) - Trap 5 enemies within a Black Hole

Bullet Dodger (20) - Finish a multiplayer match with less than 5 deaths (minimum of 4 players) -

Butcher (25) - Claim 20 Killing Streaks in multiplayer

Cannibal (25) - Devour 300 enemies

Completionist (20) - Unlock 100 collectables

Contract Killer (25) - Be on the winning side in 50 multiplayer matches

Crazy For You (25) - Acquire Black Hole

Darkling Master (15) - Acquire all Darkling types

Darkness Master (100) - Only for those who are completely in tune with the Darkness

Executioner (10) - Kill 25 enemies using execution moves

Fashionable (25) - Collect all the Darkling outfits

Flag Owner (10) - Capture 50 flags in a CTF match

Flag Runner (5) - Capture 20 flags in a CTF match

Gatherer (5) - Unlock 25 collectables

Ghandi (10) - Find a peaceful solution. At least momentarily

Gunner (15) - Kill 30 enemies using Darkness Guns

Gunslinger (25) - Kill 7 enemies within 15 seconds

Happy Birthday (25) - Acquire Creeping Dark

Hard to Kill (5) - Take enough damage without dying within a multiplayer match

Heart of Gold (50) - Help those in need

Henchman (15) - Be on the winning side in 20 multiplayer matches

Hills (25) - Acquire Darkness Guns

Hoodlum (5) - Be on the winning side in a multiplayer match in any of the multiplayer modes

Into the Dark (50) - Complete the second part of the game

Keeper of the Secret (10) - Someone's waiting by the phone

Knuckle, Meet Face (5) - Perform a melee kill for the first time

Legendary Dark (35) - Complete game on hard setting

Legendary Executioner (20) - Kill 50 enemies using execution moves

Legendary Summoner (25) - Summon 50 Darklings

Made Man (35) - Be on the winning side in 100 multiplayer matches

Mook (5) - Be on the winning side in 5 multiplayer matches

Murderer (5) - Claim a Killing Streak in multiplayer

No Man's Land (25) - Acquire Demon Arm

One With the Dark (25) - Achieve maximum Darkness level

Patriot (5) - Capture a flag in a CTF match

Picking Up Stuff (5) - Unlock a collectable for the first time

Ripper (15) - Kill 30 enemies using Demon Arm

Roadkill (10) - Kill the workers in the tunnel

Rogue Killer (15) - Kill 15 enemies using Creeping Dark

Romantic (10) - Real guys stick around for their ladies

Summoner (5) - Summon 5 Darklings

Take a Look at the Sky (50) - Take down 6 airplanes.

The Collector (10) - Unlock 50 collectables

The Don (45) - Be on the winning side in 250 multiplayer matches

The Obsessive Collector (15) - Unlock 75 collectables

Up Close and Personal (5) - Perform an execution move for the first time

Void Bringer (15) - Kill 20 enemies using Black Hole