A single player mission for Doom 3, played over three levels. Includes a Quake style skill selection area. The Endarchy project started life as "Industri" on the Tenebrae engine way back in 2002.
Even though Endarchy has been released, there has been a little bit of feedback about the UAC guys being a bit too trigger happy if you shoot them. So...
It's called Endarchy and is a single player mission for Doom 3.