Some bright walls

Why some walls in my map are that bright? The lights i placed are useless and some rooms looks white.

If you have checked the compile log for leaks and don’t have any adjust the brightness setting of the lights until they look alright

Are you using HDR lighting? You need an env_tonemap controller somewhere in the map in addition to at least one env_cubemap. Make sure you build the cubemaps after you compile and see if the bright walls stop being so bright.

Post your compile log. If the compiler can’t find a material, surfaces with that material will not be lit properly. It looks like that’s happening here.