Codename: Tenka (1997)

Wars and pollution have driven the Earth to chaos. The year is 2096. The remaining colonists' only dream is to leave the planet and establish on Extrevius 328, a corporate conglomerate manufacturing plant for deadly warriors, known as Bionoids. You are Joseph B. Tenka, future Bionoid, very unpleased with the situation, and determined to stop the corporate evil plans. Over 20 missions with detailed briefings can be found in this Doom clone with creepy atmosphere which has been compared to Aliens.