The absolute best way to build Calliope splits your priorities into three distinct categories: , Safety Distance , and the Harpy Mitigation Buffer .
take "Movement Speed" on Calliope. A faster Calliope means a louder Calliope. You want her slow, stationary, and deadly.
: Allows you to spot Spitters, Harpies, or large groups of Executives before stepping into their aggro radius. 3. Calliope vs. Caelus: A Direct Comparison
: Use her high vision range and speed to uncover the map early. This helps you locate pickups and "choke points" for your colony.
: Adds a small area-of-effect (AoE) to her shots, helping her clear swarms. Tactical Gameplay Tips
To build a "better" They Are Billions , you should prioritise , Damage , and Attack Speed (Load Speed) to leverage her high mobility for kiting. Unlike the slow, area-of-effect (AoE) powerhouse Caelus, Calliope relies on "run-and-gun" tactics to whittle down hordes without taking damage. Core Upgrade Priority
However, many players hit a wall during the mid-to-late game tactical missions—specifically Gamma Medical Center and Omicron Laboratory —where terrifyingly fast can shred an unoptimized Calliope in fractions of a second. To build a better Calliope, you must ignore trap perks and prioritize a lethal mix of raw damage, long attack range, and critical survival thresholds. The Ultimate Calliope Build Path
While Calliope has noise reduction perks, many players find them less effective than raw damage. It is usually better to kill enemies quickly than to try and sneak past them, as you need the research points found in the missions anyway.