Gulka

Attacks
Shoots spiky balls at the player.

Tactic
The fact that Gulka retracts itself when the player approach, makes them harder to kill. To kill them, the player must either increase his Nail's range with the Longnail or Mark of Pride charm, use a spell such as Vengeful Spirit or reflect the spiky balls it spits back at it.

To reflect the balls, try to stand directly under it if it's located on a ceiling or directly in line with it if it's on a vertical wall. When it shoots the spiky ball at you, hit the ball. It'll shoot it back at the Gulka.