EDIT - Since it has been guessed correctly on FA. The game this is based off is Diablo 3 ^^

I was really excited for Confuzzled 2018's theme. So i thought i'd start drawing a few pictures of various characters cosplaying different game characters. Although i really like this one, the game it's based off might be a little obscure.
If you recognize where it's from then please do say so in the comments (i might give a small prize to the first person who guesses correctly)

Character and art (c) Crystal-WolfDarkness