The game is very repetitive : you know what to do, one ennemy at a time, and as such, the game relies solely on your precise dodging. However, since the patterns are not diverse enough, dodging isn't really fun, and the action is more about going in and out of the enemy's range with good timing.
Maybe a dodge roll, and more diverse enemy attacks may have helped?
Personally, in being perfectly honnest, I'd say the game isn't bad, but quite average.