血 快节奏 死亡 2.5D 跑动射击 迷宫 兔子 新潮的 徒手对抗 恶魔 Steam 传送 heavy metal one-man army darkness BOSS 战 爆炸 数字发行 Steam 云记录 世界地图 恶魔入侵 人类 流行文化提及 wasd movement 查看全部 + corpse sprinting mechanics auto-aim 混战 stat tracking instant kill invisible enemy vision obstruction 困难关卡 quicksaving rock music moving platforms recurring boss been here before harder versions of earlier levels 触手 temporary invincibility griefing invisibility jumping puzzle satanism hidden room secret areas within secret areas another world crowd control no-reticle aiming selective invincibility lost soul dial-up wide area network game operation male protagonist