This unlocks in-game, but not on Steam.

So, it's a bit weird, because I can use it to skip the pre-title screens, and I can set it up in the options, but even afterwards, it's not recognized in the menu, or during gameplay. I use a wireless Xbox One Controller, and I made sure it was turned on before launching the game....

From the storepage, it's seems like almost the entire game is free. Am I missing something?

It turns into a ghost with one third of its health left, then butt stomping it kills me.

I did some speed runs when I noticed that resetting from check point with the reset button won't add to your death count. Is this perhaps a bug? Sometimes when you are fast enough you can reset before dying and keeping your death count at a low number or even at zero....