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