Learn all the powers and their upgrades.
Continue playing to unlock this secret achievement.
Reach the destroyed Sanctuary in the destroyed apartment complex.
Earn ten experience rewards for completing areas without raising the alarm.
Use Vampiric Powers 50 times.
Use Shadow Leap 50 times
Distribute 20 Power points amongst the powers as desired.
Find and use 7 PDAs during play
Subdue and then Feed on 5 enemies.
Complete a level without tripping a single alarm.
Meet Blooming in the museum catacombs.
Kill 50 enemies who were neither suspicious nor hostile.
Distribute 10 Power points amongst the powers as desired.
Take out or Feed on 50 enemies.
Complete the tutorial.
Feed on an enemy.