They tend to attack in groups, making them even more dangerous.
In groups of 10-15 they can deal up to 200 damage if the player isn't ready.
They can be very fast.
Because they act much like Servants of Cthulhu, you may want to use a powerful sword to deal with them. A flamethrower is helpful as well . Another good weapon you can use is the Daedalus Stormbow with Holy Arrows because the projectiles when shot come down from the sky this is useful for killing multiple enemy groups