There is a Doom version of this level from 1996 that's actually a classic in the Doom community.

Lots to like about this -- it feels clean, and moves along at a good rate. But it suffers from two bad flaws, which mean I can't score it higher than three stars.

First, it's too easy to get lost with no idea where to go next. For example, it took me ages, after pressing the button in the room that you fall into, before I found that it had made the silver key appear in the first big room.

Second, and much more important, the weapon placement is ridiculous. In the first room, you can see but not reach rocket-launcher and some red armour, but you can't get either of them until you've killed everything except five enforcers. So the rocket-launcher is almost literally useless. As a result, you have to do most of the map with just the single shotgun, and even the nailgun and double shotgun only turn up near the end. That spoils the sense of progression.

Shame, really -- it would have been so easy to fix.