No no, don't change the difficulty at all! I just played through the demo and beat all the bosses, but I tell you, it was a rush! I made it by the fireball guys this time, I don't know how I missed that the first time, no problem.
My favorite boss has to be the winged demon with bats. The methodical way it progresses is really beautiful, I kept trying to take out bats here and there faster than I should and getting killed haha. I also really love the dragon/lizard man with shield, having to time your shots is really fun. I wasn't expecting the lava portion, that was really cool. I kinda cheated, the lava boss froze on one of my later attempts and faded to fully transparent and held still, so I could shoot him over and over and kill him. I must have been blessed by the gods for that! I think it's a great fight though, and will play it over to get the full experience, it's a clever idea how it progresses as well. Of course the giant ogre is really amazing looking, I've always loved that fight from the first time I played.
I can tell you put a lot of thought into this, and I really appreciate it! I wish I could understand the dialogue between monks, I'm looking forward to that.
The last fight too, that was awesome! A sweaty keyboard means a good game :-) Please keep up the work on this! I'll buy it and tell anyone I can to when it comes out.