Short but sweet. I liked the detail of the dead slowing your movement. The graphical style is stellar and fits well.
The first time a second wave spawned I thought it was broken, would have been nice to have an indicator for that.
Well, it's a short game so I tought that a "surprise effect" of multiuple waves would be a nice (and quick to implement) touch.
I liked it, it worked well, just maybe there could have been a "more enemies approach" text or something to indicate it was deliberate!
