The quest is to obtain the Merciless card after a match with Wigfrid. I've completed it about three times now, both winning the match and losing the match and it still hasn't given me the exp or the quest.
Steps to Reproduce
I picked Wigfrid and I played the match like I normally would. I also used the Gorge skin all of the times I played, which might have made it not register?
This issue has been fixed in either a future version or updated in a previous version.