I've been playing Doom Eternal and I can't say I'm enjoying it to be honest... I liked the 2016 Doom, but I think they're gone completely overboard with the "arcade-y" feel of this, gameplay-wise there's too much emphasis in non-shooting mechanics (glory kills, bloody punch, flamethrower, grenades, chainsaw, too many buttons for me to keep track of).
If you play it like a regular shooter you're constantly running out of ammo no matter how good your aim is, and enemies are bullet sponges unless you kill them with a specific mechanic intended by the developers (such as lobbing grenades in a Cacodemon's mouth). It's like the shooting itself is a secondary thing here. The "arena" sections of the game where you're locked in as waves of enemies are thrown against you feel like arcade nonsense, even less integrated to the level design than the previous game, they're just elaborate set pieces with randomly hanging bars which you can use to jump around frantically like a monkey on crack during battle.
Worst of all, they have removed the basic pistol with infinite ammo so you can easily run out of ammo during a battle if you have not upgraded your inventory properly... in one occasion I had to resort to punching a Hell Knight to death (didn't go well).
The art design is atrocious, with glowing items floating everywhere like in a Mario game, everything is so colorful left and right and the enemies seem to be really cartoonish-looking. I know this is supposed to be a call back to the original games, but those had a much darker feel and did very well to create a hellish look and feel given the graphic limitations of that era.
Regarding the story/plot, I realize this was never a strong aspect of Doom, but in Eternal it's an unnecessarily convoluted mess with lore, heroes and villains like a space opera. What happened with the good old tough marine fighting a Hell invasion? Also, it doesn't even follow properly from the story of the previous game, as if they had removed the first 3 or 4 missions that explain what happened after the end of Doom 2016.
TL/DR: really disappointed, too much emphasis on silly mechanics rather than shooting and lousy art design/style. I think Doom 3, despite the bad rap it got, was a much better game than this.