Destructible demons

Destructible demons is a new gore system featured in Doom Eternal, first featured in the QuakeCon keynote presentation on.

Details
Destructible demons is a visual and mechanical system in which enemies dynamically reflect the amount and types of damage they receive from the Doom Slayer.

Most of the damage reflected in this way is purely aesthetic (e.g. chunks of flesh blown off to expose gore and bone), but certain weak spots will both take extra damage and disable enemy attacks if targeted specifically. This changes how the game plays by adding the ability to cripple certain weapons available to enemies, making them useless to that particular demon and forcing them to adopt less threatening attack patterns.

The precision bolt mod for the heavy cannon, the shotgun's sticky bombs, and the ballista all do bonus damage to weak spots, allowing parts to be broken faster. Weak points in general are also vulnerable to the plasma rifle's heat blast mod and the blood punch.

Demons possessed by a spirit cannot have their weak points destroyed.

Notable destructible parts

 * Arachnotron: The arachnotron's plasma turret can be destroyed, forcing it to rely only on its grenades and claw swipes.
 * Mancubus: Breaking the mancubus's cannons prevents it from using its flamethrower attack and makes its fireballs smaller.
 * Cyber-mancubus: Its armor can be destroyed by the blood punch, causing it to take more damage from attacks.
 * Revenant: The rocket launchers can be shot off, depriving the revenant of its primary mode of attack and forcing it to fight on the ground.
 * Icon of Sin: Defeating the Icon of Sin requires the destruction of its eight targetable body parts in two stages- the first stage breaks its armor while the second stage destroys its flesh to expose the gore and bones underneath.