Thunderhead

The Thunderhead is an unlockable weapon that can be purchased from Kleines for 130,000G after defeating Overlord. It fires large spheres of electricity that travel slowly and zap enemies they pass by. The projectile itself passes right through enemies and doesn't do any contact damage, but instead deals a constant 25 damage every 8 frames to enemies within a certain radius, thought it can only target one at a time. The projectile disappears upon hitting a wall, but can zap enemies through walls if shot parallel to one. In general, the Thunderhead can melt bosses very quickly, but its slow fire rate in addition to only being able to target one enemy at a time makes it somewhat inefficient at clearing groups of small enemies.

Unique Variants
Currently there are 3 unique Thunderhead weapons, listed below. Like all unique weapons, they cannot be cursed or have any additional keywords added to them.