aslo, I don't know if it was clear. but this second column of stats, with the game paused, represents the items you've completed that become permanent additions to your character, even after dying and being reborn.
so the game is really punishing, but once you complete feathers, bones, horns or any upgrades with the items the bonus it gives you continues permanently.
if you have 10 of 20 necessary plumes and die you loose it, but if u got all the 20 ones you hav a permanent speed bonus for all your future chars.
I think that with levels advancing in difficulty more gradually and these elements being presented little by little, this dynamic would become clear (and satisfying)