Don't miss the 'Blood on Crystal' DLC #4 Gameplay Trailer for Atomic Heart, an open-world first-person action-adventure game developed by Mundfish. Players will experience the conclusion to the first part of the Atomic Heart storyline with the 'Blood on Crystal' DLC #4 that sees P-3 and the Twin traverse through the Crystal Complex to face CHAR-les. Take on enemy after enemy in flashy combat, leading to a face-off like no other in Facility 3826. 'Blood on Crystal' DLC #4 for Atomic Heart is