Talk:Affinity/@comment-74.178.39.165-20140124023638

Using abilities also grants the ability's base energy cost in affinity as well. Friend and I confirmed this: he used Rhino's Iron Skin at the start of a level before any enemies were killed (was not a Challenge requirement) and leveled up from it; I later used Frost's Snow Globe (again, not challenge) while waiting for the others at Extraction after an extermination mission and leveled up from it.