Really cool map, I like the cris cross design.
Can I suggest you add a method to help the attacking team to find the next CP? They could come a bit confused and as the map is fairly small may cause some pwnage for the defenders.
You should also consider some more alternate routes, there is really only 2 entrances into each area. The map needs to be a bit larger as well or its going to be really tough for the attacking team.
Overall I like what you have done, maybe no HL2 textures
Keep it up mate!