Do not rely on Wood Walls forever.
Many guides tell you to switch to Titans or Thanatos for the final wave. The pure Calliope build says no. they are billions calliope build
The "Heavy Rail" Endgame Composition:
Defense Layout for the Final Wave:
Preparing for the Final Wave. The Final Wave on Calliope usually hits from one massive direction or splits between the two main access points. Do not rely on Wood Walls forever
Before diving into the build order, you must unlearn what you think you know about this unit. Defense Layout for the Final Wave:
Why use the Calliope Build? Because the Thanatos is overkill for 90% of the game. The Calliope clears waves faster, reacts to flanking Harpies instantly, and most importantly, it shoots up. It is the best unit in the game for killing Spitters perched behind walls.