You should be using TF2 textures, not HL2 textures. Also, your map appears to be fullbright, you need to put lighting in it or it's considered unplayable.
Added lighting and fixed a minor door glitch on one of the lifts.
KNOWN BUGS: I've also noticed the the "3" sign in one of the bases is stretched out far. I've already fixed this twice and it still does it. The stretched texture doesn't show in in hammer.
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