There will be more data and proper atribution here (original author, steam link, original post date, etc) real soon, I promise. This is just like a technical test to see if they're coming in ok at all.
Bullet Priest » Patch 0.6.0.0
This patch makes sure you get three different ability upgrades each time to choose from, no longer will upgrades overlap. I’ve also added an icon for the player upgrades. I’ve fixed the upgrades for the aim skills as well on PC.