Past 72hr Jam Entry koth_midtown a3

fiddled around with odd protruding geometry and pretty compiled

- fixed clipping issues
- made door trigger brushes larger
- made all small doors non-solid
- added extra space to the steps leading out of the spawn doors
- changed soundscapes
- changed skybox

didn't want to do much, i'll do more stuff later

[no screenshots available, using rc1 (a1)]