My first run:
http://shub-hub.com/files/demos_singleplayer/slave_firstrun_spirit.zip
Crashed once (thus maybe the first demo is borked) and then died once later.
The map is impressive and the coloured lighting is used well.
Some minor things were annoying (apart from the hurting debris and missing "hit" feedback of breakables...), those were the brushes that stood in my way or affected my movement in combat. Most notably some structure in the floor or the black/yellow lights (? don't really remember) on the sides of ways. Those could have been skipped/"illusionaried" well. But that is my way of playing and taste.
Textures and brushwork are great. At first I thought the textures were external high-res ones.
The Quoth monsters and non-base Quake monsters made me really enjoy playing this one even though it was another base map. :p
One funny thing: When I came into that "outer rim" grey concrete way on the side of the map the engine somehow reset gamma to 1.0 making it pretty dark. At first I did not really notice, then I thought "hm, rather dark here", then "wow, did he just used some trick to add a day/night effect?". It looked so nice with the skybox. But then it was way too dark in the building again. :)
Great job!