Genshin Impact
Anemo Hypostasis, strategies, weak points, and achievements
Defeat Beth, the Anemo Hypostasis found in Stormbearer mountains, near the edge of the map.

Beth is an Anemo Hypostasis, a being consisting of purely Anemo energy, giving it a natural immunity to the element; defeating it will reward you with Hurricane Seeds and Anemo Crystals.
Anemo Hypostasis Location

Anemo Hypostasis Arena

Strategy
The Anemo Hypostasis is fast, so be ready to have a shield or to dodge on time.
Most of the Boss's attacks will leave it vulnerable to your attacks, whether right after or while it is attacking you. Observe and choose wisely which moments are more accessible for you to attack.
There's one move where the Anemo Hypostasis will launch the cubes upwards and then hit where you are like a Meteor Attack, creating an updraft; try to keep them separated, as they might prove useful for some achievements.
There is a move where Beth will summon several tornadoes; you can change their element if you hit them with the swirl elements (Cryo, Elecro, Hydro, or Pyro), leaving orbs of the tornado's element up high for the Boss to use on another attack, you can absorb them if you manage to get high enough, whether with an updraft from the Meteor Attack or any platform you can make.
The Anemo Hypostasis will absorb any remaining orbs to create a shockwave of the element of the absorbed orbs.
After being weakened enough, the Anemo Hypostasis will return to the center of the arena and summon a few Anemo Orbs and some updrafts; if you absorb all the orbs, the fight is over.
Weak Point
The Anemo Hypostasis does not have any weak points nor ways to be stunned, so you'll have to attack at every opportunity that arises, which there are plenty of; aside from the Anemo invulnerability, the Anemo Hypostasis is equally vulnerable to all other Elemental and Physical damage.
Achievements
"That's one big Crystalfly"
Absorb all of an Anemo Hypostasis' Wind Crystals before it can be revived.
At the end of the battle, it will summon four orbs and some updrafts; if you absorb all orbs on the first try, you'll get the achievement.
"...Not indicative of final product"
Defeat an Anemo Hypostasis that has undergone 4 types of Elemental Conversions.
Change the element of as many tornadoes as you can and let the hypostasis absorb at least one of the resulting orbs of each component; you have to do it all in the same fight, so you'll have to let the phase repeat a few times; when you witness it absorbing at least one orb of each element, defeat it, and you'll get the achievement.
Back With the Wind
Absorb at least 10 Elemental Orbs created by the Anemo Hypostasis in a single battle.
After the tornado phase, absorb the resulting orbs, whether by riding the updrafts from the meteor attack or any other way you can get height; the count remains between phases as long as it is the same fight, so when the tornado phase repeats, you can continue where you left off.
That's One Big Crystalfly
Defeat an Anemo Hypostasis in Co-Op Mode.