This E1 replacement successfully captures the spirit of the original but not much more. Level design is arguably a cut above, with maps constantly looping in on themselves in creative ways and secret hallways allowing you to get the jump on some enemies in a couple spots. The combat is similar to the IWAD, which is to say it's easy even for a new player and anemic for everyone else. The final and secret levels are especially barren and can be completed in under a minute.
Fava Beans is worth a play for its historical significance and intuitive level design, but the combat leaves a lot to be desired. Still, for something that can be completed in under 30 minutes it's worth a play.
This megawad has a good gameplay flow, made of many small levels, but like most single-person megawads, suffers from repetition. From halfway onwards, the levels start to look like homages to commercially-made maps. And later on, a few maps are based on missions from Star Wars: Dark Forces, and possibly from other games. The gameplay retains author's style. Overall it leans on the easy side, with too many bonuses making the job easy.
MAP05 seems broken. At some point you can't operate a lift to get back. The only escape is idclip (sorry if you're playing on nightmare).
Couldn't harm the final boss.
This wad is amazing. I had fun playing it and it had cool designed maps. In the Maps 21 - 30 is where the true challenge begins. Map 26 and Map 30 are completely hard. Map 28 is the most insane, you need to be a speedrunner to complete it or else you will be caught by It. My favourite map from this wad is Map 29 Hell on Earth. It reminds of Map 13 Downtown from Doom 2 and Map 29 Odyssey of Noises from Plutonia which I really liked both of them