<iframe width="580" height="385" src="https://www.youtube.com/embed/L2K3ymmin1M?hl=en" frameborder="0" allowfullscreen></iframe> <br>Tip for beginners: DO NOT attack 1 White Skull bases, they reward Veteran XP at a 50% rate. 2 White Skull and 3 Red Skull bases reward Veteran XP at the full ... <br><a href="https://www.youtube.com/watch?v=L2K3ymmin1M">source</a>