Well, since nobody has gotten around to it yet...
I found it to be a quick map, but enjoyable. Gameplay wise, it's very easy. I had to put it on nightmare to make it any more difficult than Doom 2 map01. Given the size of the map, it's not that surprising. Regardless, some difficulty settings would have been well worth the time. The puzzles were...alright, at best. Again, they were pretty easy, and that makes sense for what this level is (from how I see it, atleast). The only puzzle I didn't figure out immediately was the switch pair in the imp room, and that's only because my sound was off.
The layout is a different story. I found a few areas to be very constricting. The imp room is a great example. They aren't a huge danger, but I found myself fighting the imps from the outside of the room simply because of how little room there was. The blue switch bridge suffers from a different problem. It's just too high up, and you don't get a sense of where it really is in relation to the map unless you look for it.
The detailing and atmosphere is
very good IMO. I never found myself stuck on the detail, or the fog making it hard to fight. Really, the map simply looks good. D_RUNNIN only brought it down for a moment, before I turned off the music and played Doom's E1M3 instead.
My only real complaint about the detail, is the effect you used for the blue keycard. Having the key teleport away just to appear 10 feet behind me in another room was kind of obnoxious, even though it was a 2 second trip. If the key was in sight but out of reach, then it would have worked a lot better. Bonus points for expanding the imp room and keeping everything in there.
Overall, it's a decent map. It certainly works as the first map in a set (though missing the rest of the set). It has an almost Doom64 feel, which is just awesome. Not enough maps out there have that. I can't wait to see where it goes.
here 
