Good! But could be better.
I like it, I really do. But it needs some work.
The gameplay just has a same-y feel to it after the first two dozen enemies or so. The goblin boss is especially boring - you just need to keep the shield up until he's open. You create a wonderful landscape, but forget to vary the terrain. The entire game is an unending plane, which makes me wonder why you bothered to add in the ability to jump (can't jump attack, after all).
Situations with multiple enemies are the only challenging portion of the game, but not because of any decent AI work or interesting monstrous abilities. The guard flinches whenever he's hit, even if the wound is minimal compared to his life remaining. This makes it almost impossible to land a blow when there's three enemies onscreen - you find yourself hiding behind your shield waiting for your mindless foes to synchronize their differing rates of attack so you can get in one quick swing and then hide for another full minute. One goblin takes about 5 seconds of work, but three goblins take 5 minutes.
That said, the flavor of the game can't be faulted. The musical score is very appreciable, and the art just *works*, even if the gore is a bit exaggerated. I won't pass judgment on character design or plot, as I quit midway through due to a distaste of the gameplay.
All in all, 7/10. Not bad, but not great.