Kururu Boss Guide
Kururu is the fourth boss you will face in Etheria: Restart’s Grim Pursuit, a content area specifically focused on farming Shells to enhance your Animus Builds.
Kururu’s Element is HOLLOW, meaning you will want to avoid bringing weak elements (ODD) to this encounter to increase your chances of success.
You can fight Kururu on Normal and Hard difficulty, with the reward quality increasing for the higher difficulty.
The monster created by Leiboz Life through fusion experiments has a massive body lack self-awareness, only destroying everything in front of it by instinct.
In this guide, we will break down Kururu’s Skills, how to face this encounter, as well as suggesting an accessible progression team for defeating Kururu.
Possible Rewards
Kururu Skills
Venomous Spike
Fires energy spikes at our unit with the highest ATK, dealing 3 hit(s) of 140% damage, each with a 50% chance to inflict a 2-turn [ATK-].
Infinite Depths
Kururu emits an energy wave to impact all enemies, dealing 3 hit(s) of 120% damage.
Furious Tsunami
Kururu summons a powerful tsunami, dealing 480% damage to all enemies; if there are a jellyfish that exist, detonates all surviving jellyfish, with each dealing 600% damage to all enemies.
Jellyfish Conjuring
Kururu summons 4 jellyfish at the beginning of the turn, and he gains a permanent [Power Cache] while jellyfish are present.
Power Cache – With his jellyfish companion alive, Kururu gains a permanent [Immunity] aura and takes 90% less damage. This effect cannot be dispelled.
How to beat Kururu
Kururu is one of the more straightforward bosses in Grim Pursuit, but he introduces a unique mechanic that demands a very specific approach: kill the jellyfish adds first, or your damage and debuffs will be completely wasted. At the start of each of his turns, Kururu summons four jellyfish, and as long as even one remains alive, he benefits from Power Cache, granting 90% damage reduction and full immunity. This makes him effectively unkillable and untouchable until you clear out the jellyfish. Therefore, your strategy needs to center around strong AoE damage and quick wave clears.
Bringing high-damage AoE units is the key here. Once the jellyfish are gone, Kururu is wide open to debuffs like [DEF-] and [ATK-], and his Power Cache vanishes. At this point, you can unload with your nukers or apply control effects like [SPD-] (from Marvell or similar) if needed. But keep in mind that [SPD-] won’t stick until Kururu loses his [Immunity], so control is only useful after the jellyfish are gone. Plan your speed tuning accordingly if you want to use control effects—ideally they should act last in the round, after the jellyfish are cleared.
Kururu’s damage isn’t especially threatening if you keep the jellyfish in check, but his Skill 3, Furious Tsunami, becomes deadly if any jellyfish are still alive—each one detonates and adds another 600% AoE damage on top of the base hit. This can easily wipe your team if you’re unprepared. To avoid this, use support units who can offer good healing or shielding, like Helkid, Lingluo, or Veronika, especially if you’re struggling to kill the jellyfish in one cycle. But in most cases, raw damage is your best defense.
An ideal team would include one buffer like Chiaki the Echo for [ATK+], a [DEF-] applier like Dinah or Gray, and two AoE-focused damage dealers—Lian is especially great at clearing adds, while someone like Victor can deal massive single-target damage once Kururu is vulnerable. Stick to the basic principle: wipe out the jellyfish first, then burst the boss, and this fight becomes one of the smoothest runs in the entire dungeon rotation.
