Played it...Loved it quite a lot! I loved the style and the gloomyness of it. I felt the weapons were very creative and the puzzles quite easy which is good.
Does the map have an ending? I noclipped around after finding some room where you drop down and there is nowhere to go...Its sorta brown with a line going around the top edge...Anyway I noclipped across and found it lead back to some old room and I stopped.
Tried out the other weapons and they were great...Tell your designer he has good ideas. I like the decals and the architecture.
Cleverly made and shame you are stopping...By the way this is the first time I've played your maps.