Unfortunately I have to say I don't like visuals of this map. Yes, you were trying to make it look realistic, but... it just looks ugly. You are doing the same mistake as one Czech mapper, jaeden, used to do (I hope he doesn't kill me for saying this). Different parts of your map are either too large and thick and with extremely high ceiling, or too cramped, long and thin. Either too underdetailed, or with too much unnecessary small details, which look ugly. Either with too many objects (monsters), or with no objects. Either boxy, or with million walls of different angles. But the worst and most ugly thing is that the crossing between these parts of your level are too sharp. You are mixing too many different textures, shapes and heights. Examples:
The gameplay is unfortunately spoiled by some annoyances like monsters behind a midtexture or suddenly popping out (often behind you), pain elementals attacking you from close range etc. If I forget them (which is not easy)... ehh, the map is quite well playable. There are some interesting ideas used in this map, but putting into practice... Sometimes you run out of ammo, but that's not so big problem since you have the berserk from the beginning. Sometimes you get lost, which is slightly bigger problem, but it's possible to deal with that.
In total, I must admit, you put a lot of effort to detail, but the result isn't very good, at least I feel so. I'm sorry, but I think this is one of the worse maps here.
I played MAP17 again and found out a bug: the player can get stuck in the plasmarifle secret. Fix that if possible, please.