Congratulations!
I don't know specifically about game development but I find in other things that the last '10%' can take a lot more work than you'd expect. Maybe you can come back to it in the future - if not, well done for what you've done! This game looks really good. It's really cool to see how you've reached that by iterating week by week. We all have room for improvement but it looks like you've done really well!