A few problems.
There are a few annoying issues I found with the game. First is the blocking, that really needs to be key activated. It's hard to play this game without constantly moving around, so the passive block really interferes with game play. You also need something to indicate that you're actually blocking, I didn't even realize I was blocking until my second time through. Same problem with taking damage, you need to add in some sort of animation or sound for when you get hit. The enemies could use some variation. Maybe add in some ranged enemies, or something. The ground combat gets dull after a while, so some varied combos and/or different weapon types should be added. The air combat is a lot of fun though, I think it's fine the way it is. Some variation on the music and maps would also be nice. And.....Yeah I think that's it.