A well designed, detailed and entertaining tech base map. Has a really nice flow, with a good choice for music track. Makes you want to keep moving.
All the more perplexing that four enemies spawn all the way back, at the start of the map, once you push a completely unrelated button. Probably an oversight.
Still, pretty good.
Link to Nightmare 100% walkthrough: https://youtu.be/Kh_ZMt9cSAI