Thank you very much for the words of insight, I really appreciate it. The map has been fully optimized so that is as fast as the map will play on your laptop im afraid, but if you can run HL you shouldnt have any problem running this map. When you take down the strider it opens a hole in the ground inside the tunnel near the broken tanker, drop down there to continue on with the map (I may have to make this more obvious depending on community response), you have only played through roughly 1/4 of the level. Environment sounds are triggered as you progress throughout the level, you should find a healthly dose of music, but adding more outdoor ambient sounds is a good idea none the less. The tunnel was left fairly empty because of the huge draw distance, It really helped to boost the framerate in that particular area so I decided to pour those resources (that would be in the tunnel) into areas that were in greater need of detail. If you get stuck again please post and let me know.