Ancient Enemies Returned X is a Weekly Seasonal Objective that repeats on a 10 week cycle when a Galactic Season is active.

To complete the Ancient Enemies Returned X objective, you must kill both Malussa the Gleaming Star on Tatooine and Tormentor Urdig on Alderaan.

Malussa the Gleaming Star

Malussa the Gleaming Star

Malussa the Gleaming Star spawns on Tatooine in the Jundland Wastes, she is found in the halfway between Outpost Rennar and the Imperial Ridgeside Sentry Post. She can be found standing on the desert near some large rocks and Tusken Raiders.
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Malussa the Gleaming Star drops 1 Darkside Token when killed.

Strategy

Malussa the Gleaming Star has two mechanics that need to be avoided, she alternates using both of them although they can happen at the same time.

Every minute or so Malussa the Gleaming Star will apply a poison DOT to your character, you either need to cleanse it yourself, have a healer cleanse you or use a medpac to survive it.
Tank players should take priority when being cleansed, if you are a DPS player and the boss has a high amount of HP it may be easier to die, respawn and run back to the boss.

All players both melee and ranged need to be careful for the White Lightning AOE circles. Every 30 seconds light white circles will spawn under random players, you will only have 5 seconds to move before bright purple lightning activates in the circle, making part of the floor around the boss deal damage if you stand on it.
This can be hard to see on Hoth due to blending into the snow.

Tormentor Urdig

Tormentor Urdig

Tormentor Urdig spawns on Alderaan in the Juraan Mountains. South of Outpost Bolym for Imperial Players and North of House Alde for Republic Players, nearby a shady patch on the ground surrounded by Nerfs.
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Tormentor Urdig drops 1 Light Side Token as loot when defeated.

Strategy

Tormentor Urdig has two mechanics that need to be avoided, he alternates using both of them although they can happen at the same time.

Melee players and tanks need to avoid the Large Yellow/Orange rectangle that covers a large area across the boss themself, when the yellow circle under the boss fully charges up to the edge the entire Large Yellow rectangle will deal massive damage for a few seconds.
This can be hard to see on Tatooine and Hoth due to blending into the ground, as it has been pictured above.

All players both melee and ranged need to be careful for Light Blue Lightning circles. Every 30 seconds light blue circles will spawn under 12 random players, you will only have 5 seconds to move before several lightning bolts strike every circle.
Getting hit by one lightning circle will not kill you, getting hit by two or multiple at the same time will.
This can be hard to see on Hoth due to blending into the snow.