If the map does not load, rename the bsp to something smaller. A short one but worth playing for a good five minutes. Has very simple gameplay with nothing too hard to complete that poses too much of a threat. A few enemies here and there which is good for the size but could of used a few more. There is also plenty of ammo and health around as well.. Easy puzzles that can be completed without much thought.
Very good level of detail in every location having a great texture and colour choice which fits well together. Plenty of locations had a realistic feeling to them which is very good, and the lighting also helps accomplish this due to it looking good. Structure of the map is also very good with no problems with the design anywhere.
A short simple map with an easy gameplay and great design.