Neat! If there's anything I can suggest so far (besides the obvious spawn rooms which you're already planning on adding) I would suggest using more wedge-like player clips on areas with slight inclines. There are a few, such as some select doorways and stairs, that are particularly annoying in how you much jump up them instead of just simply walking up if they were clipped. If you'd like me to point them out to you, let me know! Other than that, I think the "cave" sections on either side of the map could be given a bit more lighting, unless the intention is for them to be quite dark. Either way, good stuff so far!
