it's not the most obvious, but the debug panel shows the different stats changing for the player, as well as each enemy type.

https://imgur.com/a/XQSzIlf

here's some max corruption with the buttons enabled. Melpert and the Slime Girls are beeg.

We wanted the buttons to be a little bit mysterious, but we also wanted to have LEDs (different colors) that tell you if the button is on or off. 

But essentially, each button controls a smattering of player & enemy stats, and makes them subject to the knob's corruptive influence. If we had more time, we could have fleshed-out the levels more, so you would have to, for instance, shrink Shroomguy to fit through a hallway, and live with any of the other stat consequence.