Singularity (2010)

time travel bloody death steam achievements bullet time online easter egg one-man army boss fight explosion digital distribution playstation trophies voice acting polygonal 3d profanity xbox live melee kill feed a.i. companion difficulty level suicide games on demand dolby digital weapons swap plot twist flashback escape from exploding building male protagonist ghosts single-player only instant kill bink video rpg elements traps loot gathering scripted events undead throwing weapons customization upgradeable weapons exploration backtracking multiple endings platform exclusive fake in-game advertising vent crawling working for the enemy ghostly manifestation male antagonist communism doctor mad scientist movie reference changing sides propaganda giant insects xbox controller support for pc tape recorder stat tracking vision obstruction jump scare moment audio logs valuable garbage context sensitive multi-monitor support difficulty achievement weapon modification objectivism gore teleportation silent protagonist checkpoints environmental puzzles underwater gameplay physics manipulation alternate reality guided by radio arrival by crash landing secret achievements swarming enemies foreshadowing playstation network color separation canonical death water level voice chat secret identity missable achievements inconvenient malfunction aggressive door-opening environment as weapons story rich leaderboard gamescom 2009 special forces time-manipulation nazis class-based post-credits plot twist groundhog day scenario developed by one person