I'm sorry, but just no. I'm okay with one hit kills, but while the concept is good. The end result isn't. The fact that your attacks are so slow that if you're not swinging several seconds before the target gets to you, you're dead, and that your shield is useless for attack or defense, breaks the game. I mean really, your best bet is to throw your sword, until they start coming in threes two one the right, one on the left ect. And then you're fucked regardless of what you do, because your character is just too slow to react.
In summary, bad timing, lack of an actual advancement system, and generally slow controls and character when your enemies are so much faster, makes this game playable, but hardly enjoyable or winnable.