Boomer

The Boomer’s huge body and heavy weapon distinguish it from the smaller Drone infantry. E-Day pairs this more formidable enemy with an early, oversized Boomshot: heavy ordnance from the opening days of the Locust War.[2]

Heavy weapons slow movement while still allowing most movement actions. Players can also rip heavy guns from turret installations. This makes heavy firepower part of the wider arsenal as well as a threat carried by the Locust.[2]

The low-health requirement makes this a finishing move. Fire from cover before committing to the approach, and check the surrounding enemies before moving into melee. Carving up a Boomer also earns the ‘Okay, Boomer.’ achievement.[2][3]

The September 30 launch notes lowered the health threshold for Prototype Lancer executions on Boomers, Flayers and Grinders. Weaken the target sufficiently; these notes do not publish an exact percentage for the new threshold.[4]

Horde’s difficulty settings and Poisons can make enemies tougher. Coordinate fire with your squad to weaken a Boomer, then take the execution opportunity when the fight allows it. A clear route matters as much as having the correct weapon equipped.[2][5]

The Lancer comparison helps you identify the chainsaw model. For the rest of the enemy roster, see the Locust field guide.[2]