Tibbers should die when Annie does.
Why make it so he stays alive and keeps chasing? He's already super aggro as it is. Plus I think that if you were able to survive Annie's point and click nuke, you should be rewarded with the earned survival. Not having to run for your life afterwards because Tibbers runs faster than Usain Bolt, possibly granting Annie a kill for essentially doing nothing after the fight was over. Thoughts?