Full list of all 50 The Darkness achievements worth 1,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox 360.
Complete game on normal setting
Complete game on hard setting
Kill 7 enemies within 15 seconds
Trap 5 enemies within a Black Hole
Be on the winning side in 250 multiplayer matches
Finish a multiplayer match with less than 5 deaths (minimum of 4 players)
Be on the winning side in 100 multiplayer matches
Be on the winning side in 50 multiplayer matches
Be on the winning side in 20 multiplayer matches
Claim 20 Killing Streaks in multiplayer
Capture 50 flags in a CTF match
Capture 20 flags in a CTF match
Be on the winning side in 5 multiplayer matches
Capture a flag in a CTF match
Take enough damage without dying within a multiplayer match
Be on the winning side in a multiplayer match in any of the multiplayer modes
Kill enough players to achieve a killing streak within a multiplayer match
Devour 300 enemies
Help those in need
Unlock 100 collectables
Take down 6 airplanes.
Complete the second part of the game
Bring down the Chopper
Only for those who are completely in tune with the Darkness
Kill 20 enemies using Black Hole
Acquire Black Hole
Collect all the Darkling outfits
Summon 50 Darklings
Achieve maximum Darkness level
Kill 30 enemies using Darkness Guns
Kill 30 enemies using Demon Arm
Perform a melee kill for the first time
Unlock 75 collectables
Acquire all Darkling types
Acquire Darkness Guns
Acquire Demon Arm
Complete the first part of the game
Someone's waiting by the phone
Kill 50 enemies using execution moves
Find a peaceful solution. At least momentarily
Summon 5 Darklings
Kill 15 enemies using Creeping Dark
Real guys stick around for their ladies
Unlock 50 collectables
Unlock 25 collectables
Kill 25 enemies using execution moves
Unlock a collectable for the first time
Acquire Creeping Dark
Perform an execution move for the first time
Kill the workers in the tunnel