A solid effort considering that this is one of the earliest well-known Doom WADs. Clearly showing its age and nothing too mind-blowing, but cool to see some distinctly non-id flavored approaches to areas. It felt a little unfocused near the end, and I was confused by the last two areas. As far as I can tell, there was a non-functioning Icon of Sin in the second to last arena area? It was cool because it was a sort of map puzzle that brought the player around the Icon, but then you didn't actually have to fight it. Then, the very last arena felt like it was going to be bonkers from a size / setup perspective, but then only had a few Mancubi and Barons. It's not entirely fair for me to be this harsh, though - this came out before Plutonia and I feel like folks were on a different wavelength at that time. It's worth playing if only because it's a relatively short experience and gives perspective on the history of DOOM WADs.