Originally Posted by
SharkyFinn
The only I advice I have is too late to do anything for you. I thought about not posting it, but maybe it'll help someone else.
A max wallbreaker deals out 2400 damage to walls. Level 7, 8, and 9 walls (2500, 3000, and 4000 health, respectively) all require two max wallbreakers to smash through. At level 10, the wall strength goes up to 5500, so they require three wallbreakers to get through. Although having stronger walls is always a plus, you get no gain when it comes to wallbreakers at level 9. Therefore, it is my recommendation that players don't upgrade all their walls to level 9 before going to 10, but instead should upgrade each piece to level 9 and then level 10 before going on to the next one.
It'll take longer to have all matching walls, but you'll get more use out of even a handful of choice level 10's than you would with all level 9's. It's just my opinion, of course, but definitely something players should understand and consider.