Pretty good start. As much as I like base maps, cramped ones can get a little irritating to move through. Even though the brushwork was very appealing (loved the pipes), I felt like I was constantly hampered by those narrow corridors. Some of the fights seemed a little bit forced and out of place. Also, by moving a step backwards when I heard two shamblers approaching, I was locked out of their room - had to noclip through.
Thanks for the effort. Demo might be a little boring.
1stRunDemo
QuakeSpasm 0.85.9
skill 2; 14:15, 5/6 secrets, 64/64 kills