You can do everything with a quadboxer, you just need a good team for it for WSG or AB. It's important that you're not getting followed around by noobs but everyone do what they can to add something. So for AB your healer shouldn't always be following you, since he can be more usefull at other points aswell.
(you should win vs 2 or 3 players without your healer, so he isn't needed and can be usefull somewhere else for example.)
Connect With Us