I started working on a legendary challenge in Fortnite, which requires me to "deal damage":
While I'm progressing rather well, I can't help but wonder what is actually counted as damage, due to the generic nature of the description. I know from my progress so far that damage dealt with weapons and the pickaxe to opposing players is counted. However, what about things like enemy structures, walls, vehicles, wildlife, etc?
After reviewing existing questions, visiting the wiki (could've easily missed it in the plethora of information provided there), and searching on Google, I'm not 100% certain on what, specifically constitutes damage in Fortnite's Battle Royale.
What constitutes damage with respect to this challenge?