Flanking involves multiple attackers on the same target. Backstab in the game was achieved simply by... walking slowly around the target at any given moment.
It was a stupid mechanic that won't be missed, especially since any characters on the battle board are supposed to guard around themselves at 360 degrees when not flanked.
Let's hope height advantage is next.
This ^^ - I was so glad to find it buried in all the other patch notes: "Backstabbing characters no longer provides Advantage on attack."
