Speedran it down to 53.24 seconds. I challenge anyone to try to beat my time.
I get that it was 72 hours, but I still think that you should introduce mechanics gradually. Not even throughout different levels, just one is fine. Maybe if you choose to battle the first rat, it explains a little bit about the atk and def mechanics. Felt more of a puzzle game than an rpg though, which I think is fun. Good job.