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 multiple rocket launchers.

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

Tactics

 * The body of a Devastator is protected by medium armor and thus can soak up a decent amount of small arms fire, however, their heads are fully exposed, allowing Helldivers to quickly down them if aimed there. The armor is weaker in the waist and arms, if the head is too hard to hit.
 * Despite their slow movements, they'll use different weapons to try and target any Helldiver. The best bet is to use shotguns or heavier weaponry on their limbs, which can slow them down or remove their weapons.
 * For the tougher variants, explosives and stratagems (like the Eagle Cluster Bombs, Barrages, and Autocannon) are excellent at taking them down.
 * The shield of a Heavy Devastator is classified as heavy armor and require high caliber weapons such as the Railgun to penetrate. However, the shield is not large enough to protect their heads and their machine gun arm. A Helldiver can shoot off a Heavy Devastator's machine gun arm which leaves 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 in order to kill the Heavy Devastator.
 * The rocket variant can be especially deadly and troublesome, especially when there are multiple units of them present, as their rockets not only pack a tremendous punch but are also fairly accurate. Thankfully, their rocket pods can be destroyed with concentrated fire. Attacking them can also prevent an impending launch via staggering them, which can save 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 is unable to 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.
 * Despite doing minimal damage, staggering weapons such as the SG-8 Punisher can still effectively stunlock Devastators if fired at the unarmored limbs.

Trivia
The standard Devastator has a gear above its head, which could be a reference to the Iron Halo, a personal shield generator that high ranking Space Marines wear. The Heavy Devastator, with its shield and heavy cannon, could be a reference to a common loadout of Terminator marines, that being 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 own unique ways;