EmP, funnily enough, I didn't beat this one (I reviewed it for a contest, was in Yunalesca's late-game dungeon when I had to get it written for contest deadline, picked it up once after that, went the wrong direction at the save point I was at, left the dungeon, went back to the save point, quit and never played it again), but did endure XII and XIII.
XII, to me, was a chore, but it was the sort of chore I enjoy in games (find really tough monsters and figure out how to beat them) and felt more Western with how it was devised. I didn't kill all the high-end Marks (the ones far tougher than the end-game fights), but beat it.
That last part was true for XIII, where I beat the game, but didn't get through all the high-end marks (quit around the one big dude god thing challenge where you go through a series of rooms, fighting one in each, until a giant Ochu or NeoOchu killed me repeatedly until I lost interest in the game), but the game itself was more of an un-fun chore. Too much walking in straight lines, fighting battles at certain points. Really pretty to look at, but boring to play until you get to the fairly open area where all the marks were. And by then, my interest was fading to the point that when it's time to leave that area to do the final couple chapters of the game, it was hard for me to be interested in doing so.
I'm not afraid to die because I am invincible
Viva la muerte, that's my goddamn principle