The problem with this game is that the authors went somewhere wrong, and this applies not only to the entire series from the beginning, but even to the reboot itself.
In principle, there is a easy difficulty, but anyway, basically the game is made as a series of arenas with challenges, in which all monsters are some kind of puzzles that must be solved first (well, not like that, before each new monster, the game will show tactics!), and then you need monotonously kill them the whole game, arena after arena, level after level.
And weapons, yes. (They are gorgeous), but which are simply not allowed to be used normally. There is very little ammunition for each weapon in the game, they constantly have to be "cut" from the weakest monsters. This can be the most frustrating because you have over a dozen weapons, each with literally multiple shots.
And this, obviously, repels many.
Since the levels are very, very long, you go to the game not to relax, but as if you are going to work, because each level (12 + 1 short one) takes about 2 hours of time each about 10 arenas in each. And that's a lot. And you should always remember that some enemies need to be killed only with a certain type of weapon, otherwise it will take even more time.
And some battles, in particular with bosses, are not some interesting shootouts, but stupid running around in circles, which you accumulate ammo and health, then fire one full set at the boss, and then go again for several circles.
There are also many stylistic questions, because the authors did not make a sequel to Doom (2016), they made Quake, because all these gothic castles, teleports and jumppads are just such a big salute to Quake. Oh, and there are also references to the Super Mario Brothers and platforming, which no one asked for!
And the plot, yes. So much unnecessary text in a game where you have to shoot demons from hell with a shotgun, it was just never needed. And the text there is complicated, twisted, and you have to try to hear/read it between scenes where you tear off someone's head or gouge out their eyes.
And what's worst, apparently, the authors do not understand that they went in the wrong direction. Because when they update and add a new mode (Horde Mode), they add a series of arenas mixed up with platforming. But why?
Next they made two story DLCs, which add... arenas! But they, like in the old cheap beatemups, simply add old monsters there, but of a different color. You had an imp - now you have a stone imp, (look, it is now grey, not brown as before!), which can be killed only with a specific mode of a specific weapon. There was a strong monster in the main game - you have the same one, but in armor, and now you just have to kill it twice as long.
Cool? No.
BUT if you understand and accept the rules of the game, then this is a great game. It's plays well, it's beautifully optimized, it looks good, and there's plenty to keep you busy for a few weeks.
But you can never start your acquaintance with shooters from it. Not at all under any circumstances.
Doom 2016 is a much better and more logical option if you want Doom. But I wouldn't even recommend considering Eternal as a sequel to it. This is a conditional Quake VII, take it that way (the Roman numerals are like in Final Fantasy, each subsequent game is not a continuation of the previous one).
Phew.
Rip and tear, rip and tear it.
But judging by the fact that the third game is story-driven again, probably not everyone was thrilled.
Pic added.