If Shock Bombs also get too expensive, when Tanks are nearing a Cannon, a 'micro' strategy can be used with to destroy the Cannon(s): place a Smoke so that all Tanks that would be targeted by the Cannon are protected, then, when the smoke clears, all Tanks will fire at once, destroying the Cannon quickly (unless the Cannon has enough health to survive this). To make this work perfectly without taking damage from the Cannon, it is best if the Cannon's turret has to rotate before it fires; this way, your Tanks will all fire before the Cannon does since they are ready to fire before the Smoke's gone while the Cannon must first rotate its turret before firing.. Boom Beach Kettlebells Lv.57 no CASUALTIES!!! This is a video of how to destroy Kettlebells Lv.57. If you enjoyed this video please leave a like and . Total Number of Buildings: 24 Total Energy Available from Buildings: 69 Total Energy Available from Non-defensive Buildings: 0 Destroying a building will reduce the .