Hammer Defenses are massive structures developed to disrupt and destroy large amounts of enemies from a distance. A large column of steel pounds the ground, generating a wave of seismic activity. Through underground steering mechanisms, the wave is channeled and directed towards incoming enemies. To protect the building from its own weapon, the Hammer has a minimum range.
The Hammer Defense has the farthest range out of any Soviet stationary defense, which allows it to destroy frail enemies (particularly Tier 1 vehicles) before they even reach the Soviet base or weaken more resilient ones for the rest of the other defenses to finish off the survivors. Also, its range is also enough for the Hammer Defense to engage most artilleries, which is another strength that other defenses lack. In addition, its splash damage punishes the strategy of grouping up forces too close to each other, which compensates for the single target nature of most Soviet defenses (especially the Tesla Coil) when paired up together. As long as the Hammer Defense is supported with such defenses to negate its minimum range flaw, a Soviet base will remain near impenetrable from vehicle and infantry hordes.
A minor difference that the Hammer Defense has from its equivalents is its lack of turret, which can make its targeting unpredictable to enemies if manually ordered by the Soviet commander. In addition, the seismic waves happen instantly, whereas other defenses have to rotate their turret towards intruders, causing a slight delay before firing.
- The Hammer Defense is first used by the Chinese enemy in Warranty Void.
- In Dragonstorm, it can be built if the player captures an Atomheart, although it is not formally introduced until Juggernaut.
- In Power Hunger, the destruction of Hammer Defenses and Dragonfly near the shore is the third objective of the mission.