7. Raid option (King of the Hill event) - after you attack an opponent, you'll have the option to raid using an increasing amount of energy each time. You earn points and chests as if you attacked without using a dragon, which saves on healing potions and quickly increases the amount of points earned.
8. Remember the 70% rule - as long as you destroy 70% of the base you'll get all the points.
I'll do another edition during the next PVP event. Good luck!!