Well in an overall package, this isn't bad but it could be improved.
The wads you're using are blurry but I think most wads are blurry when you approach them The level could use more detail like doors who open verticly or horizonticly, some broken lamps, some ammo shelfs, tons of stuff but I suspect it's still in an WIP phase right now Well, it's looking quite promising so keep up the pace
One tip I could mention is to use textures/skins for your level but with geometry blocks it's impossible so I would recommend to make your next levels in a modeling program so the texture quality goes way up.

Cheers

Frazzle