Syphon Filter 2 added multiplayer which features some characters to select from (including deceased characters from Syphon Filter), as well as new maps not found in single player mode.
Plot[edit]
Hours after the events of the first game, Gabriel Logan and Lian Xing are enemies of the state to the Agency after uncovering its connection to Syphon Filter, labeled as terrorists to the general public. Agency operative Dillon Morgan captures Lian at the PharCom warehouses, forcing Gabe and the CBDC soldiers to rendezvous with ex-Agency operative Teresa Lipan in Arizona. Simultaneously, the Agency scrambles a squadron of F-22 Raptors to intercept their transport over the Colorado Rockies, so Gabe and CBDC Lieutenant Jason Chance head down the mountain in search of their plane and a box of PharCom data disks. Agency operative Steven Archer attempts to stop them at all costs.
A group of conspirators, including Mara Aramov and Agency director Lyle Stevens, make a deal to deliver the virus to a rogue Chinese general named Shi-Hao. Meanwhile, Lian recovers in a U.S. Air Force base where Morgan, Derek Falkan, and Thomas Holman are working with Dr. Elsa Weissinger of PharCom to extract infected plasma from test subjects. Lian learns that the other subject was PharCom CEO Jonathan Phagan, who survived his gunshot wound long enough for the Agency to take the plasma. Weissinger protests that Phagan is useful and should be kept alive for further research, but Morgan, not intending that the U.S. government find Pharcom's CEO infected with an unknown virus, deactivates his life support, tying up a loose end.