I wasn't expecting this to have such coherent and focused gameplay. It's a little weird that your health is like a resource where you have to plan and strategize around using it to get past enemies, but it totally works.
Just by doing that one thing, you're way above most of the games in the jam. You can actually plan and strategize, the core of any good game design. So few games have that.
I would make it so the player can always see their health. Pressing a button to see health is somewhat awkward and most people can't remember what they just saw.