Martian Saucer

The Martian Saucer is a large flying boss that spawns during the Martian Madness event. The Martian Saucer moves through blocks, and has four turrets with independent health meters that must each be destroyed before damaging the saucer itself becomes possible. The turrets include two rocket launchers and two laser machine guns. In addition, the saucer itself fires a large beam ("death ray") that can only fire directly downward, and which cannot be destroyed independently. The player can damage the core only if all four turrets have been destroyed.

Behavior
The Martian Saucer has three attack modes and always moves a short distance between attacking. It cycles through these modes in this order: After the turrets and cannons are destroyed, the saucer stops and shakes for a moment as its core becomes exposed. It is worth noting that the Saucer can be damaged during the transformation. In this stage, the Saucer will fire only its death ray, always moving towards the player. The death ray deals massive damage, even to those with Solar Flare Armor. It also shoots out yellow flames that linger on the ground for a while that deal damage if touched, similarly to one of the attacks by Mourning Wood.
 * The Saucer locks onto your current location and fires a volley of lasers at that location. This attack does not follow you if you move around.
 * The Saucer fires multiple small homing missiles from its cannons.
 * The Saucer positions itself above the player before unleashing its "death ray," travelling in the direction you were in.

Tips

 * To dodge its first attack, hover above or below its lasers. To dodge its second attack, run away from the saucer as it shoots so that most of the missiles hit the ground in front of you. To dodge its third attack, have it start shooting its "death ray" and fly over it, since it cannot change directions as it fires. Rinse and repeat to destroy the turrets and cannons.
 * The "death ray" cannot go through solid blocks so have some cover above your character. It is not easy attacking the saucer directly since it always hover some distance above the player so have minions and projective weapons to attack it.
 * Stay well hidden under solid blocks when it goes into the berserk stage. It is also useful to have a weapon that can go through walls in his berserk stage so you can stay safe.
 * It is easy to dodge the saucer during its berserk stage by moving away from the saucer wherever it is while flying. This means that the "death ray" can't catch up to you and that you don't touch the yellow flames it produces.
 * The Stardust Dragon minion is capable of killing this boss without any intervention from the player.
 * Using any non-piercing arrows with the Phantasm can deal massive damage to the saucer.
 * With the usage of the piranha gun, the Martian Saucer may be easily taken down by latching it on to one of the components and using cover. This will require re-attaching the piranha after the saucer enrages.
 * A great way to defeat it is make a house with 2 doors, and use a Yo-Yo to attack it.
 * With a decent weapon and armor, such as Nebula Blaze with Nebula Armor, the Martians can be killed quick enough to prevent the spawning of the Martian Saucer.
 * An easy yet lengthy strategy is to build a small box with the floor 10 units below the surface units below the surface, making you immune to all attacks. Spawn all of your minions so that they may attack the Saucer instead of you. This process is easier for those with summoner equipment, as they can deal more damage. The Meteor Staff item also does damage from inside the box.
 * The Scourge of the Corruptor proves to be a useful weapon against this boss since the little corruptors can damage it without you actually aiming at it.
 * Hiding under a roof and throwing the Possessed Hatchet out the sides proves to be a very effective tactic against it, especially when it's enraged and not using the laser cannons any longer, as those could shoot you laterally. The same can be done with any type of yoyo as long as the roof has a hole in it.