What do you think of this for the player disc?
Honestly, it's very hard to read for me. =(
Your non-pixel-art version was actually the easiest to read for me! DX
I'd definitely recommend a closer view of her face. I think it's okay to cut out a lot of the helmet in the portrait.
Have you thought of using symbols for the characters, instead of portraits? You could use her lamp or sword or something. Bones or skulls for the skeletons, etc.
It might be easier to make the discs readable that way, but it might also be a little boring. Food for thought, though. =)
I like your brown color palette, even though it seems not everyone completely loves it. I personally think it fits the dungeon theme well, without being too gloomy. Reminds me of a NEO-GEO game or something, which is always a good thing to me. =)
I like the idea of the game a lot, too. Unique, and it sounds fun!