Ah the skill involving the ring levels is broken. Or at least I think it its, the number over the ring doesn't change. It could just be that of a visual error. If there was stats that I could see it would help.
Ah, its an ok premise but I think it lacks depth. But it dose make up for that some what, with different strategies needed for each opponent.
Also I don't think poison should be able to stack like the way it does.