Pretty mixed feelings on this one...
Well its almost hard to know what to say here...this is a sweet game and fun to play, but, as others have pointed out, it's really buggy. It's strange to see a game which is refined in so many ways break down in so many obvious aspects. Anyhow, still worthwhile...
Also, I was able to beat the game on master mode relatively easily, and if anyone is wondering how to do so I'll explain briefly. I started out with all of my points in strength. Then, I leveled about five times only by killing the fire elementals and hitting the theif; I never hit the boss so he never got better moves. I kept doing this until I had maxed out my weapon (I personally took the path on the right, which ended in a blade called the Chaos Savior, it's special was a summoned energy/lightning storm that goes to the right dealing 500 dmg). Anyhow, each time I leveled I put all the points in strength until around level 3-4 where I would put 1 in defense and 2 in strength. Eventually when he started getting better moves I moved into 2 defense 1 strength. The other stats didn't really seem to help much. Anyway, I didn't start taking the boss down till my weapon was maxed and once this happened I just pounded away on him. Very little need to dodge attacks cause of all the health I had at that point. Occasionally, I would use my limit break when he was about to use an attack I couldn't dodge because it gives momentary invinsibility. So it took a whlie but I did finally beat him. (It may or may not be worth noting that it says 'congratulation' at the end and not 'congratulations' as it should, if the author is reading this...I hate it when things get misspelled in games)
Also, for anyone interested in what you get for beating the modes, the first two levels give you an extra 50 health when you start the game (they don't seem to stack though so I think the max starting health is 150). When you beat master mode, you get a savior medal and some card thing which are going to be used in the next game...given all the glitches I saw here though I have serious doubts about whether or not these things will actually get transferred. I would like to see that though, given that I think this series has potential if bugs are worked out and if there are ideas for expansion like some sort of card/armor system in the works like it seems there are.
Anyway, all in all its a cool game with a rough learning curve but I look forward to seeing what comes next.