This is wonderful! It's super cute (I love the squeaky-toy sound effects used for when the squirrels get hit), and pretty fun to play once you get the hang of it. I did run into a couple of issues, though:
- I noticed a bug where squirrels would run towards an empty spot on the ground for a while, sometimes gathering in a cluster. I think I saw a nut fall through the ground at one point, so my guess is that they're running towards a nut that they can't reach because it's underground, only changing their focus once the nut falls down far enough that the AI determines another nut to be closer.
- I think the red squirrels got temporarily stuck inside the stump a couple times (maybe a nut was blocking their path?), but that bug was much less common than the first one.
- I found the hold-the-mouse-to-aim to be a bit difficult to use - many a stone flew over their intended target, especially at close range.
- The difficulty curve seems to be a little slow. I ended up stopping once I reached 100 acorns in the stump and just waited for the gray squirrels to steal them while I wrote this. However, I did notice that after I stopped playing, the gray squirrels suddenly seemed to appear in much larger numbers than before - can the spawn rate be affected by how many gray squirrels you knock out?
Still, great work overall (and I'm happy to have the highest non-dev score)!