The Twins

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"This is going to be a terrible night..."

The Twins are a Hardmode Mechanical Boss that are a harder version of the Eye of Cthulhu. The Boss consists of two separate flying entities that are connected by a tendril, each with its own attacks and life count, and both must be defeated. They are summoned at night using the Mechanical Eye and must be defeated before dawn, otherwise they despawn. They also have a chance of spawning on a random Hardmode night if they have not been defeated yet, which is signaled via the chat message, "This is going to be a terrible night..." at dusk.

Attacks

 * Retinazer has a red iris and fires purple eye lasers.
 * Spazmatism has a green iris and fires balls of Cursed Flame.

Both alternate between their signature attacks and a charging melee attack, much like Eye of Cthulhu. Retinazer's charge dash is faster and covers a bit more distance than Spazmatism's charge dash.

Each eye has a second phase. Retinazer transforms at 8000HP, while Spazmatism transforms at 9000HP.
 * Retinazer becomes a mechanical eye with a laser turret in its pupil. It fires more rapidly and with higher damage, and periodically fires in quick barrages. The barrages become more intense the more damage Retinazer takes.
 * Spazmatism becomes a mechanical mouth. It chases the player, dashing with greater speed and range, and periodically spews streams of Cursed Flames from its mouth in a manner similar to the Flamethrower. The flames can inflict the Cursed Inferno debuff and deal high damage.

Tips

 * Concentrate on killing one eye completely first. Getting them both to their second phase at the same time makes the fight significantly more difficult.

Trivia

 * Retinazer's name is a portmanteau of retina, a part of the eye, and laser. Spazmatism's name is a portmanteau of astigmatism, an eye disorder, and spasm, meaning to twitch uncontrollably.
 * The Twins is the only Hardmode Mechanical Boss encounter with phases.
 * In Crimson worlds, Spazmatism is the only natural source of Cursed Inferno.

History
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