So sorry, I seem to have messed up the dimensions somewhere along the way. I am not sure how as it worked before, and then I messed something up. I solved the issue of not seeing anything on the screen.
Played around a bit more! I really like the concept.
There's some odd jittering when the characters move and I encountered a softlock after killing an enemy where the game kept waiting for the dead enemy to have its turn.
I hope you can fix this in the future! I'd really like to play:)