I finally beat Hexen as Fighter a few days ago, then ran through it again as Cleric in about half the time. I'm still on Hub 1 as Mage, but I'll probably take a hiatus before I get completely burnt. My unsorted thoughts:

-The game is very short if you figure out what to do quickly/get lucky with chosen routes. The length came from me exploring and killing everything.
-Centaurs/Slaughtaurs are significantly less annoying than I was led to believe, although sitting there and gassing them is tedious.
-The armor system makes little sense to me and should've just been Doom/Heretic style.
-Obtaining the fourth weapon happens a lot faster than I'd expect, and finding the final piece is a bit anticlimactic, what with it just sitting in the corner of some basement.
-The commonality/rarity of certain inventory items is nonsensical.
-Dark Bishops seem highly aggressive and will try attacking the player through solid walls, so you'll constantly be hearing them firing while exploring around.
-Wendigos are criminally underused.
-Elemental damage is also criminally underused. I avoided using certain weapons against enemies until realizing they'd take damage all the same.
-I thought Heresiarch was lame at first, turns out I got really lucky in my two fights against him. Meeting him again the second time, he was a lot more resilient and I actually got to see the stuff he did. He's neat.
-Korax might be a tough boss. I wouldn't know, as I had a stack of invulnerabilities and mana refreshers, and spent the whole fight nuking everything that moved without thinking.
-People say Cleric is the best, but I think that's only true for his Wraithverge. Serpent staff and Firestorm sucked at killing them, and made me miss the axe.

The initial wow factor is gone, but I'm still liking it. Here's my question: what comes next? Deathkings? Heretic II? Hexen II?