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.
Awesome action packed mod with 3 new maps in different dark setting from vanilla D3 Mars base, game got many backtracking elements and exploring is worth. Also new achievement system is something very interesting increasing chance for another replay.