Your name is John White, an scientist who escaped from black mesa in a car. After 1 week of driving, you find yourself with almost no fuel, you enter in a warehouse but you doesn't find anything useful. In total desperation you use a crowbar to break a vent, only to find the beginning of your journey...
Looking good except for the totally stretched and unfitting ceiling texture. Also try to add some support pillar for the ceiling that room is rather large.