Do not build one long line of walls. Build "pockets." Create a square of walls with a gap in the front. The zombies will funnel into the gap, creating a clump. A single Calliope rocket hitting that clump can kill 30 zombies instantly. This maximizes the splash damage efficiency.
The "Calliope build new" has one fatal flaw: Her sonic cannon is detrimental against Giants (high HP, low numbers) because piercing is useless. they are billions calliope build new
Unlike aggressive "Ranger Rush" builds that demand constant micro-management, the Calliope approach follows three core principles: Do not build one long line of walls
into Armor and HP. This allows her to survive 3 hits from a Harpy rather than being instantly annihilated. Note that Life perks generally offer more value than Armor for her specific stat distribution. Secondary: Attack & Load Speed While she is naturally fast, adding roughly 40% Load Speed A single Calliope rocket hitting that clump can
Kiting is your lifeblood. Reaching a range of 6.5+ cells ensures you can aggro elites at a safe distance and fire enough rounds to kill them while backpedaling.