This was fun to make. I added a bunch of juicy stuff I usually do in Unity just for fun. The code is heavily commented and more verbose than it necessarily needs to be, because I wanted to make it easy to pull apart for people less familiar with making stuff in PICO-8. I'll keep adding stuff over time, but figured I'd release it as it is so far.
My highest score so far is 232. What's yours?
UPDATE: Added a possibility of slimes dropping a heart if you blow them up.