Aragami
40 Achievements
EA Play
The Darkness
Perform your first Shadow Kill
How to unlock the The Darkness achievement in Aragami - Definitive Guide
Before you can earn this trophy, you'll first need to unlock the 'Shadow Kill' Shadow Technique. Now, approach an unaware guard and press and hold to summon a shadow beast to swallow the guard - and earn this trophy.
Here's a video guide, courtesy of Trophy Germany: