Nice game! I love me a good "archery" style shooter.
Your pixel art was great! The animations were very well done. Only critique I'd have is to shorten the rounds a bit, as they became a bit long. Especially the first round. Once I found the right angle to headshot the wolves at full power the moment they appeared, I just kinda left my mouse there and waited for them to appear. The birds showing up in wave 2 helped stop that though, as now I had to move around.
Overall great job though! Great submission!