Sentinel Hammer

The Sentinel Hammer, also called the Hellbreaker, is a weapon which appears in The Ancient Gods, Part Two, the second single-player expansion for Doom Eternal. It belonged to the Betrayer, who presents it to the Doom Slayer during their journey to the World Spear to "atone for his sins".

When used, the hammer unleashes a shockwave around the Slayer, stunning demons that survive the attack and causing them to drop bonus resources if they have been frozen with an ice bomb or set on fire using the flame belch. The hammer will also destroy stone imps, increase the length of time that Marauders and the Dark Lord remain stunned, and increase the time required for an armored baron to regenerate its armor.

The hammer must be charged by performing glory kills or collecting hammer charges found throughout each level (similar to the Crucible charges found in Doom Eternal). During the battle with the Dark Lord, summoned wolves will drop hammer charges when they are destroyed.

Upgrades for the hammer can be obtained by completing the first wave of each Escalation Encounter.