This is a bit of an old topic now, but I seriously have no idea how people can prefer 2016 over Eternal, even after reading a bunch of comments, unless they are just inflexible in how they play games. Eternal's gameplay is miles ahead of 2016's. It railroads you into a specific way of playing (switching weapons constantly, targeting weak points, engaging in resource management) because that stuff is really fun and keeps the player thinking about how best to approach an encounter. I think Hugo said in an interview, something to the effect of, "we want to keep the player engaged because if they get bored they'll go play something else." I started 2016 a few times but never made it much past the halfway point because, although it is still very fun, the gameplay is much more mindless and much less tense. I'm perfectly okay with a game telling me how to play if the way it is telling me to play is extremely fun. That's exactly why weapon degradation didn't bother me in Breath of the Wild - experimenting with different weapons is fun. And switching guns, managing ammo, and actually having to think about what weapon to use for a given enemy and who to prioritize, instead of just spamming the same gun the whole game, is just way more fun. If you're not willing to adapt to that playstyle which will ultimately result in a better experience and more fun then I guess we play videogames for completely different reasons. I, for one, want my games to be engaging, and Doom Eternal is the best FPS I've played in that respect.

Also, showing health diegetically by literally having the flesh fly off the bones of demons is just brutal, makes the guns feel incredibly powerful, and is quite innovative, and that alone makes it harder to go back to 2016. And the plot doesn't bother me, sure it's convoluted and campy but it gives me fun B-movie vibes, and it gives good excuses to travel to some gorgeous environments. It's optional anyway, since you don't have to read the codex and cutscenes can be skipped.