It is interesting, some people really like the new Eternal flow. Myself included. Others prefer the older style.
They definitely went in a new direction, which was extremely bold considering the Doom legacy.
Personally, having to juggle ammo management, armour/health, movement and enemy compositions makes it a much greater challenge than in the past. Which is why I have completed Eternal a few times, to try and play it "better".
having to juggle ammo management
I dislike it when ammo is constantly in too short supply - having to use the right ammo against the right enemy types to keep your ammo supply healthy and other measures of making smart decisions over ammo use is one thing and separates the higher level players from the rest in Doom - but the kind of way Doom Eternal goes about it to force the matter just to make a gap for new mechanics I find pretty meh and comes down more to whether you can be bothered with the effort rather than skill.
i prefer it to doom 2016. the imps in 2016 were much more annoying somehow
The IMPs are fun in 2016 on Nightmare. Started another gameslot last night trying it. One hit you're down to 5hp. An explosion is likely your death.
There are a few areas I'm dreading to face on Nightmare when it arrives. The Hellguards, the fight after getting off the train. The Spider demon I worked out the pattern on Ultra Violence. Save the BFG once you're up on those platforms. No electricity on the floor.
In Eternal the IMPs with wings are so erractic they're as if they're on crack. It's funny.
I was running out of ammo at the start of the game with only one gun. Then ran out of fuel for the chainsaw.
I mean this in a really nice way, but how bad was your aim! The chainsaw regenerates to 1 stack over a period of time, about 30 seconds, that combined with ammo drops round the edges of arenas shouldn't leave you with any ammo issues.