Fun game concept!
I played through twice and both times I was sent to the starting screen after a few turns (maybe 10?). Once after the market and once after a rest. I'm not sure if there is a turn limit or a goal overall? I won all my fights, so I didn't "lose" the game unless something else caused me to go back to the start menu.
I'm also not sure how to use the "slot in" chips. The instructions mention that they can be used once per battle. I tried pushing random buttons (A, B, X, Y, D-Pad) on my turn, but nothing happened.
If this game is in a git forge somewhere I would be happy to contribute to it.