FDA for CDIH v1.3. Finally got an exit, but had to resort to fairly extreme AI abuse to get through the parts I didn't know yet.
Main issue for me is how little help there is for a map that pits you against cyberdemons and archies so often in relatively confined environments. Up to the yellow key it's not that bothersome, but coming back to the beginning room once those archies start popping out it becomes awfully tight on ammo *and* at such low health you don't want to take too much risk to optimize that ammo, as a single hit from say a revenant fireball or an archie blast could potentially be death.
Likewise in that final outdoor area, you see a bunch of cacos, arachnotrons, PEs, mancs and three (!) cyberdemons, barely four stimpaks in sight and 200 cells, in the middle of the monsters mind you. Again, seeing these kinds of odds I'm not inclined to try my luck; which is too bad, because that bunch of ammo, soulsphere and a green armor behind the corner sure would have helped.
Looking at it in DB2 I see I missed a secret with a megasphere. I think it's a wee bit overpowering considering the lack of health otherwise. My suggestion would be to change it for a blue armor and put a soulsphere on top of the candle instead.
Those two cell charge packs in the outdoor area would belong better in sector 259 or sector 225 IMHO, so there's no need to dash through a bazillion projectiles to get the very ammo you're supposed to use to kill that stuff. I'd think moving the final stack of ammo/soulsphere/armor right at that corner so it's barely visible from the door would be better as well so the player knows what to expect beforehand.
Regarding those three archies guarding the exit, they were quite high, right at the edge of autoaim, and the depth of their hill, leading them to move back and forth, makes killing them more frustrating than dangerous, the only option being to take it slow.
Final but minor and entirely subjective complaint, it felt weird to exit like that. The teleporter didn't seem too ominous somehow (and perhaps I had this expectation I'd move up after seeing the imps, cacos and archies on higher ground).
That said, I liked playing through it all if in a masochistic way at times. :)