when going up the portal and showing her memory to her, the Right side Portal on top you can't go threw, it won't let you threw it, I had to shoot a rocket launcher from the middle to kill the witch in the tower, and the other day when doing the witch before going forward it glitched out, the witch disappeared when killing the two lightbearer and we had to wipe not once but three times.
-
Same problem. Couldn't complete the weekly mission, tried twice and wasted 29 minutes of my time.