First time I played AOC at launch of game, the 1st area was fully populated but further you got into game, more you realized it wasn't finished. So I gave up for a while.
Second time, maybe a year later, it was more finished and there were more people playing and I actually finished the story though it was confusing.
I then joined an Australian guild and we played through most of Rise of the Godslayer expansion although I can't remember how far I got. Its 12 years or more since I played game
My PC was reason I stopped really. I was getting to areas my GPU couldn't display. My 8 year old PC was starting to show its age. So I just stopped playing game as hard to fight things you can't see. That and my internet connection then was slow
Which may have also contributed to me not seeing things... in an online game.
I played as a Tempest of Set. Unlike melee, most of my attacks were one button, no combos needed. Sure made game easier. I was more DPS than healer. By this stage I was getting bored anyway as I had all the Tier 1/2/3 Armour sets and was just looking for 1 item to have everything... for the first expansion anyway. I see there are four of them, not sure I played any of the others.