6. The Inferno Tower
• The Inferno Tower reaches its maximum level at level 3. These towers deal out jets of flame to one target at a time. You’ll need to refuel them with Dark Elixir once they’re empty. Set in single-target mode and aim it at the strongest units on your enemies’ side. Place them near you more important buildings and make sure they’re adequately defended by your other defensive buildings. When you want to set it to multiple target mode, it’s good for putting down weaker troops (it deals damage on up to five targets). Try placing two of these towers near each other and make sure they’re set in opposite modes (single target and multiple target).
7. The Air Defense
• The anti-air defense towers reach their fullest potential at level 8. They’re perfect for taking down air troops, but they can’t do anything to ground troops. Note that these defensive buildings can only shoot down one air unit at a time. These air defense towers have great stats because they have a high damage output and great range. You should place these towers behind your Cannon launchers and Archer Towers since they’ll lend some extra firepower to those ground troops. Employing Minions and Dragons to take down these towers is key when you’re on the offensive.
8. The Walls
• Walls become all-powerful at level 11. These walls are key towards protecting your village via fortification. Make sure you don’t have any gaps in your walls (ground units will just waltz on through those small spaces). Place your walls around your fort in doubles or triples, since it will make ground units struggle even more to push through them. You should make sure you have some Wall Breakers on hand when you’re ready to take these down. Note that air units can completely bypass walls.
9. The Wizard Tower
• Wizard Towers reach their most powerful level at level 8. These towers cast splash damage spells that can kill both ground and air troops. Place several of these around your Town Hall and also drop a few Mortars around your Wizard Towers for extra defense. Wizard Towers are also a great defense when it’s placed near your Storage structures. Destroying these towers means you’ll need to put ’em down with Archers or huge Barbarians.
10. The Traps (Bombs, Spring Traps, Giant Bombs etc.)
• You’ll have several traps in your arsenal – bombs, spring traps, giant bombs, air bombs and seeking air mines. Once they’re set, you’ll have to quickly re-arm them. Traps should be placed near your walls. Note that each of these traps must be upgraded fully individually and not as a group.