Added cubemaps

Added elevator serious sam sounds

Added ambient occlusion
Added detail textures from serious sam
Added more $surfaceprop
Optimized map's lightning
Optimized addon weight
Added dynamic lights
Added missing cannon pickup under the lava (that i've forgot to add)
Added more details that were skipped in the progress of porting this map

Added missing double shotgun pickup
Added clip brushes on spiral steps in pool room

Packed content into .bsp

The addon itself