Sentinel

Sentinels are large statues of hooded, winged figures that come alive when possessed by the Crawler's darkness. A sentinel's main weapon is a large staff that is capable of releasing a blast of magical energy, releasing an empowered thunderwave spell.
Direct tactics of assault are ineffective in engaging the Sentinel, as even the most powerful weapons and attacks in the game the Sentinel can withstand to a marked degree.
Sentinels can notably also be encountered in the Shifting Sands and the Veiled Path, where they generally appear among groups of Dark Minions, as if leading the monsters.
Heavily Armoured, their weak spots being in their back.