"Dark Heart" is the ninth mission of Crysis 2.


Alcatraz travels through the tunnels near City Hall, fighting hordes of Ceph warriors. He eventually finds several of the long, tentacle-like spires, which disperse spores over the city and poison the population. Hargreave explains that the alien DNA merging with the nanosuit allows it to destroy the alien spires, acting as a vaccine. Hargreave reveals that time is of the essence because, contrary to his objections, the Pentagon is planning on flooding the city to try and drown the Ceph. Alcatraz manages to reach the evacuation helicopter but is too late to escape before the flood.

Crysis 2 missions
"In at the Deep End" • "Second Chance" • "Sudden Impact" • "Road Rage" • "Lab Rat" • "Gate Keepers" • "Dead Man Walking" • "Seat of Power" • "Dark Heart" • "Semper Fi or Die" • "Corporate Collapse" • "Train to Catch" • "Unsafe Haven" • "Terminus" • "Power Out" • "Eye of the Storm" • "Masks Off" • "Out of the Ashes" • "A Walk in the Park"