This level is based on my work place. Its pretty accurate except for the northern part of the building. I took an artistic detour here, there would have been too many 2 sided linedefs in this area with all the machinery. This level is huge! Really Big! If you take your time you can get through no problem. There is plenty of ammo and health kicking around. Even for Multi Player. I like killing Barons so ... there are a few.
Superb firework display of thousands of fireballs seeming in slow motion because of the vastness - mostly avoidable as they land where you were ages ago; but worth playing just to see it. A HUGE square surrounded by tiers with hundreds of imps and a few others, plus a blockhouse you can enter first to collect ammo. Fighting through the hundreds of monsters when you get onto the tiers is another matter, overwhelming at UV. I cheated to finish so at least I could review. Some HOM bugs.
Insanity, with voodoo dolls (see second screenshot). I get the idea of a shooting gallery if that rocks your boat, but 6000 monsters behind railings- as far as the eye can see, FFS! My PC crawled when I looked towards the invuln spheres (someone said 32 k of them and you can't avoid picking up thousands at a time). In the end I cheated with god mode and no-clipping, and waded in among the chaingunners until I got bored.
Simple, clearly a first wad. All on the flat with big, brightly lit, and architecturally implausible rooms. The first map has two rooms, the second map one, and the third map one plus a kind of exit lobby. You can do one of two things - just run past the monsters and finish (I did it in 35 seconds), or have a bit of fun killing the monsters first. No noticable bugs. I hope the author will go on (or went on) to greater things.