Fantastic job, and your first jam, no less! Congratulations and well done! Something that may help you in the future is that the game jam isn't about the clean code or well thought out systems. It's a messy, crazy fast-paced mess by design. It's the game dev equivalent of speed running :)
Quick 'n dirty code is part of it. I have a whole laundry list of things I have learned to do better regarding player interaction and AI for the bad guys. I learned it by hacking through _horrible_ code in my project... but what a lesson to learn for next time! Please keep tackling these challenges! You'll learn a lot!