Crystalian
Crystalians are humanoid figures made entirely of crystal, wielding spears, staves and ringblades. They are said to be living creatures born of the crystal itself. Their bodies shrug off almost all damage until their shell cracks.
You meet them as bosses in crystal mines and caves: alone in the Raya Lucaria Crystal Tunnel, in pairs in the Academy Crystal Cave and the Altus Tunnel, and as a rotting trio in the Sellia Hideaway.
Drops
Smithing-Stone Miner’s Bell Bearing [1] (Raya Lucaria Crystal Tunnel)
Crystal Release (Academy Crystal Cave)
Somberstone Miner’s Bell Bearing [2] (Altus Tunnel)
Crystal Torrent (Sellia Hideaway)
Weaknesses
Strike damage
Heavy hits that break their guard
Resistances & immunities
Almost every damage type until their shell cracks
How to beat it
Hit them with strike damage or heavy attacks until their crystal shell cracks. After that, they take full damage. In fights with more than one, focus one at a time and keep the others in view. The spear users lunge from far away, and the staff users cast crystal spells.