Because the railgun shot pierces in a line. By forcing them to shoot at slightly different angles (Left-Center-Right), you create a "shotgun blast" of piercing rails. When a wave of 200 runners hits the wall, a single volley from 6 Calliopes will kill 30-40 infected instantly.
While the Calliope build can be incredibly powerful, there are several common mistakes to avoid: they are billions calliope build
They Are Billions , is the "Ranger-style" hero designed for speed and tactical kiting. Unlike her counterpart Caelus, who relies on high health and area-of-effect (AoE) damage, Calliope uses dual pistols—The Devil's Sisters—to prioritize rapid fire and high mobility. Calliope Strategy & Build Guide Because the railgun shot pierces in a line
This paper describes a focused "Calliope" build strategy for the real-time strategy survival game They Are Billions. It defines goals, core mechanics leveraged, build order, unit composition, economic and defensive planning, upgrade priorities, and situational adaptations. The aim is a repeatable, efficient mid-to-late-game build that maximizes map control and survivability while keeping micro demands moderate. While the Calliope build can be incredibly powerful,
Calliope is a trainable unlocked via the Engineering Center in the campaign tech tree. The "Calliope build" refers to a strategy where you rush Calliope as early as possible and use her to carry the early-to-mid game, replacing traditional mass Rangers or Soldiers.