I am experiencing a bug with the quest. After beating the 3 wizards guarding the crystal the quest marker stays where the crystal would have been and if I die in that area or fail one of the 'draw' sequences, I don't get another chance unless I run back to the bottom of the hole at the start of that area. Making it so I have to verse all 3 instances of the 'draw' again and do so perfectly. Help?
The work around right now (if you are completing but not getting gun) is to restart mission, before killing the wizards, make sure they see you, and then stand close-ish to the crystal when shooting. Hang out for a bit after shooting crystal and wait for objective to change