A well designed small DM map - good atmosphere, coherent architecture, varied spaces and a nice use of textures produce a sense of a real place; plenty of good movement around the map - impressive especially as it was made in a day
A couple of comments
1 Pathnode28 - have a look at this - it has no outgoing connections though it does have incoming connections - it could give rise to problems on that ramp. Possibly it could be deleted and the pathnode below it moved over a bit to create a path to and from the health vials
2 There are 9 PlayerStarts - in the LevelInfo, the number of recommended Players is given as 2 - 10 - probably better if that were 2 - 8? Though, personally, I'd say 2 - 6 for a reasonable game without too much spam.