I got to floor 24(the game broke after that), and i played once. I found o pretty op strategy - get the positive switch aroo skill, and optionally the double dice skill. Then, spam increase the body stat until you have ludicrous amounts of health.
Yes, you've found it. That is the one true winning strategy, as the player's growth will be mathematically faster than the enemy, so the player will be able to continue indefinitely. We only discovered this after the jam ended so couldn't patch it XD