(like others noted, i can't get the webbrowser version to work. The download version worked fine)
The graphics were okay, but i really loved the particle system.
The axe throwing was a real pain. Not because it was difficult to aim(i haven't even tried yet to get it right) but because you're limited to just one axe(later two) and that's it. If you throw your axe, it lands behind an enemy, you are forced to get hit to get your weapon back. That's really not good. I gave up trying to beat the bosses(if that is what they were) even with unlimited continues. But hey, it looked good :)
I think there may be a bug in the tutorial part. When i had to go jump over the big wall, it told me to press right key. Thus i threw the axe over and over again until i realized i had to press the left key to super-jump(and aim with the mouse, there was also no indication that this is how it works)
As other noted, sounds were lacking, but i understand if time was running out. I had similar problems :/
One tip, keep a collection of free-to-use sounds handy in case you ever need some. Those with a license that don't require you to credit the creators. That way you can easily put in some sounds without a care in the world in any project.