Howdy, just finished playing through this now. Really enjoyed it, especially map4 as noted by others. Was on the edge of my seat trying to grab the RL and get back into the starting room while the AV followed and tried to touch me inappropriately.
I liked the variation in monster appearances - but some functional differences would have been nice to keep me guessing.
It seemed like the wad wasn't trying to be anything too mind blowing - just fun for an evening. Time well spent.