AD is a testament to the skill and passion of the quake mapping community (❤️) but it's also a monument to excess.
2+ hours , 250+ enemies, and 25+ secrets per level is just too much. no map concept can survive that kind of overexposure.
for my money (lol) something like the snack pack or the 100 brush maps are better examples of quake level design: short and sweet and not as concerned with spectacle or polish.
AD is super worth playing, if for no other reason than because it's an important cultural object, but i do not enjoy it.

[prolonged wet fart sound]
what a crime. just a total fucking travesty.
writing and delivery (the things that i was so pleasantly surprised to enjoy in the last game) are abysmal. just some trite sub-marvel sputum that reduces its characters to shallow shticks with none of the nuance or soul of the previous entry. blazkowicz is immediately relegated to the "sad husband who doesn't express his emotions or talk to his wife" bin, because apparently no one took a look at any of the already established characterisation (except they did because it's the same god damn writers! what happened???).
on top of this the gunplay (which makes some smart decisions that i agree with) is undermined by spongy level design that doesn't play to the strengths of the player's verbs; stop putting me in circular environments where i'm constantly being flanked you idiots this is a cover shooter all your best levels are obfuscated corridors fucksake.