Locust Field Guide

Learn the Locust silhouettes and behaviors: Drones fight as infantry, Wretches apply close-range pressure, Boomers bring heavy ordnance, and Seeders and Reavers reshape the battlefield.

Updated Oct 3, 2026

Infantry: Drone variants[1]
Small Locust: Wretches[1]
Heavy threats: Boomer · Flayer · Grinder[1][2]
Horde events: Corpser and Brumak[3]

Identify the enemy in front of you

Locust recognition and behavior[1][4]
Enemy	Recognition	Watch for
Drone	Upright humanoid infantry.	Different guns, elite loadouts and coordinated tactics; unarmed Drones rush into melee.
Wretch	Small, low-moving creature.	Armored Wretches scream, disorienting you and limiting your actions.
Boomer	Bulky heavy gunner, much larger than a Drone.	Heavy firepower; a chainsaw execution becomes possible at low health.
Seeder	Large creature occupying a hole in the battlefield.	Anti-air Nemacyst launches and a close-range encounter that exposes its weak head.
Reaver	A large creature carrying Drone troops.	Troop drops, heavy weapons and attacks from high walls.

Additional enemies acknowledged by the launch notes[2][5]
Enemy	What is established
Flayer / Grinder	Both are valid low-health Prototype Lancer execution targets. Launch tuning changed their threshold alongside Boomers.
Ticker	Kick and explosion interactions are present; the launch notes report a fix to Ticker kicking.
Vraahk	The Scorched Legion commander introduced by the September developer interview.

The developer podcast also identifies a Bile Frog whose attack spits acid, and explicitly distinguishes it from Imulsion. The September interview describes armored Brumaks. These confirmations establish additional creatures; they do not supply complete damage values or a tested boss strategy.[4][5]

The individual Bilefrog and Spore Matron pages provide actual creature images and response steps. The Brumak guide connects its Courthouse fight with the later Fort Vigil encounter.

Expose a Seeder’s weak point

Get close to the Seeder’s position.
Taunt it into emerging from its hole.
Attack the fleshy head exposed when it flips over.[1]

E-Day turns the Seeder into a miniboss encounter as well as an anti-air Nemacyst launcher. Drawing it out creates the opening you need to damage its weak point.[1]

Reavers can change the firing angle

A Reaver can deliver a squad of Drones and leave, or stay to fight as a heavily armed threat. It can leap onto a high wall and cling there while firing down at the battlefield. Watch the creature’s movement as well as the infantry it deploys.[1]

Corpser and Brumak invasions

Horde Invasion Events announce the arrival of large Locust units, including Corpsers and Brumaks. These enemies bring supporting troops and a temporary map-wide modifier that can block extraction or disable Supply Caches. All participating squads receive a share of the rewards.[3]

These events are a reason to regroup with other squads. The Horde Siege guide explains revives, shared supplies and how to finish your own extraction after the threat is dealt with.[3]