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.
Really, really impressed by this mod. It's fast, it's fun, and it has all kinds of really nice touches. Very slick stuff.
There's a lot of backtracking with respawning enemies, which gets a lot of play out of its levels. However, this also means that there's a lack of flow, which can sometimes lead to you getting lost. I hit a wall about 30 minutes and had to look up the walkthrough!
Wondering around aimless, while respawning enemies drain your ammo isn't fun!