I've played enough now to agree with the people saying , 'overall' it just isn't as much fun as it could be. It's almost like work. No replayability , because there's not enough mindless, shooting - running around rooms having fun blasting away on end.
Play DOOM 64 that came with it and you will notice the difference of playing & having fun with a game almost 25 years old versus the newer one.
I would pretty much say that Doom 2016 was a 'better game' ... No stupid, overly complex story, no swinging like a russian gymnast or climbing walls endlessly -- it just had a lot of good killing action , over and over.
I still like Doom Eternal , I just wish it had more of that DOOM shooting & less of the rest they added .