Devastator

The ironclad Devastator seeks to crush opponents of the Automatons' totalitarian worldview with a diverse array of heinous weaponry: arm cannons, arm shields, arm-machine guns, and shoulder-mounted rocket pods.

They can be divided into three types:
 * Standard - Devastators equipped with cannons.
 * Heavy - Devastators with machine guns and shields.
 * Rocket - Devastators with shoulder-mounted multi-rocket launchers.

Tactics

 * Standard Devastators can be killed with ease with most support weapons. Primary weapons can kill them relatively quickly as well if you shoot their head.
 * Shooting their arms will disable any weaponry that was on that arm. This is highly recommended for Heavy Devastators, as without their gun, they are little to no threat to you.
 * Shooting the rocket pods on a rocket devastator will destroy them, turning the rocket devastator into a normal devastator. It is highly advised you do this as soon as possible, as rocket devastators can easily one-hit-kill you or leave you with very little health.
 * Impact grenades quickly kill Heavy Devastators.
 * Explosives and stratagems (like the Eagle Cluster Bombs, Barrages, and Autocannon) are excellent at taking down the more challenging variants.
 * The shield of a Heavy Devastator is classified as heavy armor and requires high caliber weapons such as the Railgun to penetrate. However, the shield is designed to allow line of sight to target and thus does not protect their heads and machine gun arms. A Helldiver can shoot off a Heavy Devastator's machine gun arm, leaving it only capable of performing a shield bash melee attack.
 * Heavy Devastators have unarmored power packs mounted on their backs that can be destroyed by small arms to kill the Heavy Devastator.
 * The rocket variant can be especially deadly and troublesome, especially when multiple units are present, as their rockets pack a tremendous punch and are reasonably accurate. Thankfully, their rocket pods can be destroyed with concentrated fire. Attacking them can also prevent an impending launch by staggering them, saving lives.
 * Rocket Devastators telegraph their attacks by taking a wider stance and leaning forwards as if to brace for the rocket pods' recoil; if a Helldiver cannot disarm them in time, it's time to take cover or dive out of the way.
 * One shot from the P-4 Senator pistol or R-36 Eruptor can kill if it is a headshot or waist/crotch shot.
 * Despite doing minimal damage, staggering weapons such as the SG-8 Punisher can still effectively stun-lock Devastators if fired at the unarmored limbs.

Trivia
The standard Devastator has a gear above its head, which could reference the Iron Halo, a personal shield generator that high-ranking Space Marines wear. The Heavy Devastator, with its shield and heavy cannon, could refer to a common loadout of Terminator marines: an Assault Cannon and a Storm Shield. The Rocket Devastator’s top-mounted rocket pods look almost identical to a Terminator’s Cyclone Rockets.
 * The Heavy Devastator is remarkably similar to the Hulk from the first game, sporting a powerful machine gun and shield to protect itself from small arms fire.
 * The Devastator and its variants all bear some resemblance to Terminator armor from Warhammer 40K, each in their unique ways;