Fighting through a train station, Hayden finds Yargo, who has lost an eye during interrogation. After a brief moment of Technocyte-induced pain, Hayden attempts to use the booster, but Yargo starts to warn him about it, just before Nemesis appears. While Yargo escapes, Hayden attempts to take Nemesis head-on, but Mezner arrives and offers Hayden a chance to kill him; however, Mezner has grown powerful enough to mentally control Technocyte creatures, and begins to overpower Hayden. With no other choice, Hayden injects himself with the booster, breaking Mezner's control over him while simultaneously preventing further mutations. Before Hayden passes out, Mezner tells him that he had the same "booster", which was really meant to prepare the two for the Technocyte virus.