I was hoping someone could help me out with this. So, my party's been going around, killing creatures and whatnot, and everybody gets experience just fine...except me, The Avatar. What gives? I've been stuck at 343 experience forever now, meanwhile people are leveling like crazy. I don't get it.

And then, when I try to research the issue online it's like nobody's been through this before; I can't find anything about it! Could somebody please tell me what's going on, and why my character isn't receiving any experience?

you gain xp by landing the killing blow

Really? That's strange. Why does the reference card for the game state that everybody gets exp for killing monsters?

Everyone does get experience for killing monsters. They just have to be the one who actually kills the monster.