An Archwitch may randomly appear when progressing through the Campaign. Once an Archwitch appears, you have 2 hours or until the end of the event, whichever comes first, to defeat it before it disappears. The first Archwitch encounter appears at Level 1. After defeating an Archwitch, the level of the next Archwitch will increase (between 1 to 7 levels), up to Level 200. If the Archwitch expires after the time limit, its next level will be decrease (between 1 to 5 levels), down to Level 1.