Great, I'll give it a try today and hopefully be able to finish it up!
Edit: Wow, I even get my screen name in the credits? That's pretty cool!
I do have a couple more things I've noticed, BTW, one being that there is apparently no way to level up at level up towers after the oblivion crystal is destroyed.
I visited a tower to maybe get that extra edge, killed Wordrak(sp) for good, then the door that said "Press E to go through" took me directly back outside with no green glowy tower. The level up tower remains intact on the world map and you can visit it again with no way to use it, and there is no message that "The majority of your work is done here, do you still want to enter?" type of message.
Update: Finally finished off Demonaica; with the giant shadow bats gone, it was just a matter of being careful and giving it a few tries, except when it came to Demonaica himself, where the only viable strategy was to quickly overwhelm him with damage before he could hit you. Anyways, glad that's over!