Stone Imp

The Stone Imp (playfully called "Stimp" by the community) is a variant of Imp that appears in Doom Eternal's second expansion, The Ancient Gods - Part Two. They are Imps who have previously fallen in battle, and were subsequently subjected to intense training to make their hide sturdier before being sent back to continue their fight.

Their skin is nearly impervious to all physical damage, however they do have one weakness in the form of powerful vibrations, which can very easily tear through their new defenses.

Codex
''Imps that lost their lives on the battlefield are cast into the volcanic pits of the Burning Abyss. Bathed in Argent-befouled basalt and slag, they emerge reborn with flesh of stone. The new hide of the Stone Imp is impenetrable to most known weapons; only rapids multi-vibrations or the crushing force of a Sentinel Hammer can damage their rocky exterior. In addition to their regained agility, Stone Imps can channel the pits of their rebirth and self-immolate in Hellfire.''

Combat Analysis
The Stone Imp behaves almost identically to their standard counterpart, if slightly faster. They throw fireballs of various sizes at the Slayer, and will swipe and claw at him when he's close. Their biggest offensive difference is their new rolling charge attack. When left idle, the Stone Imp will set themselves aflame and rapidly roll in place a la Sonic the Hedgehog, before launching themselves at the slayer. The collision itself is not particularly damaging, however the disorienting screen affects are even more intense than those of the Pinky. The confusion and slowdown could easily leave the player open for further attacks and charges.

Stone Imps are extremely resilient, taking little damage from nearly all weapons, the sole exceptions being the Full Auto mod for the Combat Shotgun, and the Sentinel Hammer. In both instances, the Stone Imp will very easily go down with little fuss. Strangely, they also appear to posses a weakness to the chaingun shield, requiring one dash to kill them. They also only require one burst from the Unmaykr.