What is Re-Rolling?
Re-rolling is essentially starting over to get better starting hunters. The aim is to get a berserker with good enough stats to carry you through the end of the game. When you re-roll you lose all the progress you made, but you'll have a chance to start off stronger. Re-rolling isn't necessary in my opinion, but here's how to do it. IOS: Reinstall the app. Android: Go to your settings > apps > find the game > clear all data. Just remember that this won't be a huge benefit towards the late game. In late game you should already have a good amount of decent berserkers, and hopefully a few Heroic or even Legendary ones. Check out this post about berserkers.