Interesting take on the theme. I always like to play vampire survivor like games :D
Some things I have noticed:
- Some building hitboxes are not what you expect (for example it would make sense to run behind a house). I found myself getting stuck on an invisible wall close to props some times.
- Money only makes sense at the start of the game, since the power up prices do not scale with each wave.
- Visual clarity when you get hit could be better, but hey, you only got a week of time :D
- The waves build up really nice, like you would expect from a good vampire survivor clone.
- The assets were well chosen and the music fits the game.
Overall a pretty good entry, good job :]