System Shock Infinite is the unofficial sequel to System Shock 2.
Complete different objectives to unlock a variety of endings.
Up to 5 objectives can be completed at the same time: craft your own ending.
Marie's End: either follow Marie in all tears, or revive all out-of-phase Marines.
The Many's End: either follow Korenchkin in all tears, or perform all sabotages.
Lt. Shephard's End: either follow Shephard in all tears, or kill him in all encounters.
Shodan's End: either complete no objective, or fail the Cyberspace Collapse event.
Sarah's End: complete all Cyberspace levels.
Nostromo End: self-destruct the Von Braun, using Marie: Security in the Engineering Core.
Hacker End: defeat Shodan on Deck 4, requires a level 6 energy weapon.
OSA End: beat the game without ever clicking on a weapons upgrade unit.