Rat Scanner

The Rat Scanner is an ornamented handheld device constructed to scan obscure or otherwise unclear elements of the surrounding environment. Its primary in-world purpose is to detect or interact with environmental features, though its specific scanning target is not explicitly defined in-game. The device also functions effectively as an improvised melee weapon and can be swung with both normal and power attacks.

When placed in the world, the Rat Scanner emits an aura that prevents certain enemy classes from spawning within its nearby area of effect. The presence of a placed Rat Scanner blocks the appearance of the following enemy types: Grunts, Medics, Captains, Snipers, Breachers, Troopers, Shock Troopers, and Shield Troopers. This spawn-suppression field makes the Rat Scanner uniquely useful for controlling the composition and density of enemy encounters in a localized region.

• The item can be carried and used as a blunt instrument in combat; animations include both a normal swing and a more forceful power attack.
• Placing the Rat Scanner is the mechanic that activates its spawn-blocking effect; merely carrying it does not confer the same local suppression.
• The device is described in multiple languages as decorative or ornamented, built for environmental scanning, and repeatedly noted as making a serviceable club or baton. In gameplay terms this translates to a tool with both utility (spawn control) and direct combat use (melee attacks).
• Use placed Rat Scanners to create safe zones for objectives that require fewer enemy class types nearby, to funnel spawns away from vulnerable squad positions, or to manage the threat level during defensive phases.
• Because the spawn suppression targets specific enemy classes, it does not prevent all forms of enemy activity; plan for remaining hostile elements that are not listed among the blocked types.

The Rat Scanner is therefore a hybrid utility/weapon item: deploy it to shape spawn behavior around mission-critical locations, and wield it when close-quarters fighting is unavoidable.