Watch Dark Universe Part 1 from TekAdvisor on www.twitch.tv
Starting inside a UAC space vessel, this map pack starts slow but also builds a really cool reveal in the 1st level. Navigating the spaceship's corridors and hunting for switches and keycards did wear me down, however.
[Official Page](https://www.doomworld.com/idgames/levels/doom2/Ports/d-f/dupart1)