Quake: Mission Pack 2 - Dissolution of Eternity (1997)

Two new episodes. Sixteen new levels. One way out. Your journey has led you down a path of no return. The acrid smell of death fills the air. And you know the road ahead may lead to your grave. But Quake, with his insidious, apocalyptic plans, must be crushed. If you fail, evil will shroud the universe for all eternity.