It's a very simple looking map, but I like some of the details you put into it. Stuff like having the teams spawn in 4 separate rooms, having that healing station, having that detonator that leads to a secret room and so forth. Also, those HL2 exploding barrels and HL1 door opening sounds are just pure nostalgia.

If there was one thing I could recommend, other than adding a radar, it would be to make the space texture that's currently enclosing the map into a skybox.

good looking map