Astarte Boss Guide

Astarte is the final boss you will face in Etheria: Restart’s Grim Pursuit, a content area specifically focused on farming Shells to enhance your Animus Builds.

Astarte rotates her Element, making it hard to avoid facing her with Negative Elemental Advantage, however, she starts as CONSTANT, countering this with DISORDER early in the fight can help you gain advantage at the beginning of the encounter.

You can fight Astarte on Hard, Nightmare and Inferno difficulty, with the latter rewarding Shells with 3 Matrix Lines if you are able to defeat her.

Lore: A terrifying life form born from the sea of data, a fusion product with strength far beyond the threshold. She believes in “Reason” and, in the name of “Reason,” judged this world.

In this guide, we will break down Astarte’s Skills, how to face this encounter, as well as recommending a Progression Team for defeating her.

There are several effective strategies for killing Astarte, each built around handling her unique mechanics—particularly her affinity-based passive and escalating damage output. One of the most important fundamentals is building a rainbow team, meaning a group made up of four different affinities. For example Reason, Odd, Constant, and Hollow. Astarte’s passive, Ceaseless Assault, triggers whenever four actions are taken by characters of the same affinity, dealing massive AoE damage and applying Purgatory Flame, a stacking debuff that increases damage taken. Using a rainbow composition ensures this passive rarely or never triggers, which is essential for surviving longer fights.

Another key approach is controlling Astarte’s Strike Prep, which delays her powerful skills. Heroes like Kloss and RC-77 are particularly valuable here, with abilities that reduce Strike Prep and disrupt her turn rotation. The longer you delay her casting Starburst and other big-hitting moves, the more time you have to either build up DoT pressure or push for a clean burst kill. RC-77 also brings ATK and DEF Down, which are helpful but not mandatory—especially if you’re confident in your survivability and DPS output.

A third method is to use Taunt control. Like all bosses in Grim Pursuit, Astarte is immune to all crowd control except Taunt, making Rin a top-tier pick. Equipping her with the Bramble Set allows her to reapply Taunt through counterattacks, keeping Astarte locked on her and off your damage dealers. This strategy shifts the pressure off your team, letting you run slower or more defensive units while the boss’s major skills are delayed or neutralized. Paired with a strong healer like Lingluo, Rin can tank through most of the early fight while your team works her down. It’s not the fastest method, but it’s consistent—especially when paired with strike prep reduction or taunt disruption.

Finally, for those looking for a more passive approach, DoT teams using heroes like Obol can be very effective. Instead of relying on burst, these teams chip Astarte down over time while maintaining control and sustain. Whether you’re playing it fast with nukers like Massiah, safe with taunt tanks and healers, or slow and steady with DoTs, the key to victory is managing Astarte’s mechanics while avoiding long fights where Purgatory Flame becomes overwhelming.