Archydra

 is an Enemy in Dragon's Dogma.

It is a stronger version of the Hydra first encountered at The Encampment. It is located and found in the The Everfall, specifically the Chamber of Hesitation's second room. Unlike the regular Hydra, whose scales are black, the Archydra has a creamy white colour. It also has more health.

The Archydra has the ability to regenerate its heads, making it quite formidable, but if Fire damage is used while severing the head, or if the decapitated stump is attacked with fire soon afterward, regeneration will be delayed for the duration of the ignition.

Similar to the original Hydra, it takes less damage to sever at locations closer to the head than closer to the body.

If all four heads are severed, the Archydra will collapse and take heavily increased damage while rapidly regenerating health, up until a head is regenerated.

Tactics

 * Severing a head with a weapon enchanted with Fire leaves the stump cauterized, slowing regeneration. Hitting the stump afterwards with fire attacks also works, although this needs to be done quickly, as the heads regenerate within a few seconds.
 * If you start attacking its tail, its head will try to attack you, making them extremely easy to kill and cut off.
 * If you deal enough damage to a single head, it will leave its mouth wide open, allowing you to throw an explosive barrel at it. If you manage to shoot the head with arrows, it'll explode, instantly taking off the head.
 * As a sword or dagger user, one must watch for the Archydra to rear its head before it attempts to grab or "head butt" one of the party. If these attacks are blocked or dodged, they provide a window of opportunity to grab the head and decapitate it.
 * Sorcerers can use Maelstrom or High Miasma to cut multiple heads with a single incantation.