Unsure of Mercer's intentions Heller goes to his local pastor, Father Luis Guerra, for advice and help. Using information supplied by Guerra, Heller hacks into Blacknet Terminals to find out about and sabotage a number of their operations. Gradually consuming his way through Blackwatch, Heller eventually finds and confronts Koenig, who claims to be on his side and reveals Blackwatch's super-soldier program, codenamed "Orion". Heller prevents Project: Orion's progress by killing a super-soldier who was injected with his DNA. After consuming one of the head scientists, Heller discovers that Koenig was observing him in order to find his weaknesses. Enraged at Koenig's betrayal, Heller tracks him down, only to discover that he has powers similar to he and Mercer, and is one of several "Evolved" agents planted in Gentek and Blackwatch by Mercer. After defeating and consuming the doctor, Mercer reveals to Heller that he intends to recruit him in an attempt to control NYZ. His doubts growing, Guerra then shows Heller a video tape of Mercer releasing the virus for the second time in Penn Station, the same place Mercer originally released and contracted the virus. Enraged at Mercer's deception, Heller sets off to the Green Zone to hunt down Mercer's henchmen, including an Evolved agent in Gentek named Sabrina Galloway; upon confronting Galloway, however, Heller reluctantly teams up with her when she reveals she can help him take down Mercer. With Galloway's help, Heller soon finds that Mercer plans to infect the entire world through "Whitelight", a contaminated vaccine released by Gentek that actually serves to accelerate infection and evolution rather than prevent it. Frustrated with Heller sabotaging his plans, Mercer confronts him and the two engage in a fight. However, Mercer's strength proves superior and he easily overpowers Heller. As Mercer attempts to consume Heller, a strange chemical reaction occurs, resulting in Mercer discovering he is unable to kill him due to his 'annoyingly resistant DNA', solidifying Heller's status as a virus-human hybrid. Mercer promptly flees, and Heller receives a call from Father Guerra. Guerra informs him that a large horde of infected have amassed outside his apartment. Heller arrives at Guerra's apartment, finding only his corpse. However, a grieving Heller uses Guerra's phone to reach Athena, Guerra's contact, who is revealed to be Dana Mercer. Dana explains that Heller's daughter, Maya, is still alive, prompting Heller to head for the Red Zone to take down Mercer and save Maya.