Here is the full list of all 31 DARK achievements.
Earned ten experience rewards for completing areas without raising the alarm.
Subdued 5 opponents and Fed on them
Visited the Geoforge Parks
Distributed 20 Power points
Completed a level without raising an alarm
Found 7 PDAs
Finished the Harding Museum in less than 20 minutes.
Vampiric Powers used 50 times
Distributed 10 Power points
You met Blooming in the museum catacombs.
Used Shadow Leap 50 times
Experienced the game in Virtual Reality.
Killed 50 unaware opponents
Killed 50 opponents
Died during the Tutorial … that IS bad.
Completed the Tutorial
Found the (not all that) secret announcement for a future project in the Tutorial.
You received your first blood – the first time is always something special …
Made it through the club area at the Atlantis
Reached the ruins of Sanctuary
Talked to Samantha at Headquarters
Pursued Samantha.
Rescued Rose.
Rescued Tom.
Learned all the powers and their upgrades.
Finished DARK on “easy”.
Finished DARK on “normal”.
Finished DARK on “hard”.
Finished a challenge.
Finished a challenge in less than three minutes.
Finished a challenge without draining anyone.