---UPDATE--- Fixed for easy running of map.all you may need to do now is cheat 4 some weapons.
The first scripted sequence you see works fine. After you go up the ladder down the hallway to the corner you get trapped. Then what should happen is the leader comes out, makes his signal, and then the other guys come out and eventually he moves to his possition. Plz help- tell me how to fix or its alright if u just upload a fixed version.
The first three grunts should have the same squad-name, so the others will come when the leader sees you. Also place info_nodes so the grunts know where to move and how to find their way to attack you.
The scripts topside are a bit strange. Often, I became stuck in the func_wall_toggle. Place it a bit further away so players can't get stuck in it anymore. Also, set it's Render Amount to 0, as when you shoot it you see white decals, seemingly in mid-air, wich looks strange off-course. Also, suddenly locking the player in invisible walls isn't a very neat way to let him get ambushed. It feels so 'fake'...
As for the lighting, you should make those small circular lamps entities so they don't split up the ceiling surfaces, wich takes away that strange lighting issue you probably meant...