Breaking Mortal Shell 2: The ‘Infinite Grisha’ Exploit and the Untouchable Tiel Build
Stop grinding for hours in Mortal Shell 2. Someone just found a legal infinite Gloom and Grisha farm right under our noses! 💀💰
Players are actively abusing a respawning boss in the secret Desolate Keep dungeon to farm thousands of Gloom and over 100 Grisha Remnants in mere minutes. Combined with the complete damage immunity of the Great Martyr’s Blade, you can literally summon an army of monsters to fight for you while remaining completely untouchable… Want the exact path to unlock the infinite farm and the permanent Voltaic Crown before Cold Symmetry patches it? 👇
The race to completely break Mortal Shell 2 has reached a new, terrifying milestone.
While average players are meticulously memorizing boss attack patterns and scraping together enough Gold for a single weapon upgrade, the min-maxing community has discovered a farming exploit that trivializes the game’s economy. By combining a highly specific heavy weapon, the elusive Tiel Shell, and a respawning boss hidden in a secret dungeon, players are amassing unlimited wealth and summoning literal armies of monsters to clear the Undermether for them.
Detailed in a comprehensive breakdown by gaming creator Its Shatter, this overarching strategy acts as a masterclass in exploiting Mortal Shell 2‘s deep RPG mechanics. If you are struggling in the game’s northern regions, it is time to stop playing fair.
The Core: Tiel and the Great Martyr’s Blade
The foundation of this god-tier setup relies on acquiring the Tiel Shell. Located near the Widow’s Overlook beacon, players can unlock Tiel early by triggering a memory sequence involving an apothecary and a mysterious potion. Tiel’s primary ability, Shadow Strike, allows the player to turn invisible and ambush enemies, offering unparalleled mobility.
However, squishy assassins usually struggle against massive bosses. This is solved by acquiring the Great Martyr’s Blade from the Martyr’s Prison dungeon.
The Great Martyr’s Blade possesses what the community is calling the most broken attack animation in the game. When the player executes a sprinting heavy attack, the animation grants 100% immunity to all incoming damage and enemy grab attacks.
“It gives us full immunity to damage and grab attacks while it’s being executed, which is just super broken,” Its Shatter revealed, advising players to go into their controller settings and bind the forward movement to “Auto-Sprint” to ensure they can trigger the immunity swing perfectly every single time.
Mastering the Economy: Actuators, Needles, and Cores
To maximize the damage of the Great Martyr’s Blade, players must conquer the game’s convoluted crafting economy.
First, players must retrieve the Meridian Actuator from a chest in the Village Outskirts beacon (the prologue area) and deliver it to Fran at the Tar Forge in Marrow Keep. This unlocks base melee upgrades. Next, players must venture to the Sunken Village, defeat a localized boss, and loot a chest containing the Etching Needles. Giving these to Fran unlocks Tarstone upgrades.
Here is where the true economic strategy lies: the Tar Core hustle.
To permanently infuse a weapon with elemental damage (via Level 3 Tarstones), players need six Tar Cores and 20,000 Tarstone experience. Tar Cores are incredibly rare in the open world, but the game secretly awards one Tar Core every time a player upgrades any Level 1 Tarstone to Level 2. Therefore, players are intentionally equipping useless Tarstones just to farm 10,000 XP, upgrading them for a cheap 100 Gold to harvest the Tar Core, and saving those Cores for their main endgame stones.
Securing the Endgame Stones
With the economy understood and the sprinting heavy attack mastered, players can hunt down the game’s most powerful modifiers.
The first target is Vargo, Solar Champion, the fiercely aggressive boss of the Noctian Gate beacon. By repeatedly using the Great Martyr’s Blade sprint immunity to dodge Vargo’s relentless combos, players can defeat him and claim the Voltaic Crown. When upgraded to Level 3 using the harvested Tar Cores, the Voltaic Crown permanently infuses the blade with lightning.
The second target is the Nameless Captive, an incredibly punishing boss found in the Captive’s End beacon (accessed via the Slum Water Drain). The Captive is notorious for a hyper-aggressive spinning attack and a lethal “groin kick.” Defeating this nightmare yields the Captive Scabstone, a Tarstone exclusive to the Martyr’s Blade that unlocks a flashy, high-damage ultimate move.
The Infinite Gloom and Grisha Exploit
Even with maxed-out gear, the true power of this build comes from a glaring developer oversight located in the Desolate Keep—a secret dungeon hidden behind a marked wall in the Marrow Keep training cavern.
The exploit revolves around a specific farming route. Players sprint past the initial dungeon enemies until they reach a massive Mantis creature. Killing the Mantis yields roughly 2,000 Gloom (the game’s leveling currency). Immediately to the right of the Mantis is a false wall leading to a courtyard containing a terrifying Grisha beast. Defeating the Grisha yields another 1,000 Gloom and a Grisha Remnant.
In Mortal Shell 2, almost every Grisha is coded as a non-respawning mini-boss. Once they are dead, they are gone forever. However, the community discovered that the courtyard Grisha in the Desolate Keep is bugged. If a player defeats it, exits to the main menu, and reloads, the Grisha and the Mantis both respawn.
By looping this specific route, players are farming tens of thousands of Gloom to max out Tiel’s skill tree in a fraction of the intended time.
The Phantom Army
The true prize of the Desolate Keep exploit is not the Gloom; it is the infinite supply of Grisha Remnants.
Equipping a Grisha Remnant in the passive item slot gives the player a percentage chance to summon a phantom Grisha to fight alongside them whenever they land a melee attack. The game dictates that the summon chance is directly proportional to the number of Remnants in the player’s inventory.
Because players were only meant to find three or four Remnants in a single playthrough, the summon chance was designed to be low. But thanks to the Desolate Keep respawn bug, players are farming over 100 Grisha Remnants.
“I got a bit carried away and farmed a total of over 100 Grisha Remnants with this method,” Its Shatter admitted. “I am summoning Grisha phantoms with almost every single attack.”
The resulting gameplay is pure chaos. Tiel turns invisible via Shadow Strike, initiates the fight with a heavy attack, and instantly summons a massive phantom beast that knocks the enemy backward. This creates the perfect distance for the player to wind up another sprinting heavy attack, triggering the damage immunity and summoning another phantom Grisha.
When combined with Tiel’s advanced skill nodes—such as Poison Burst (which causes enemies hit by Shadow Strike to erupt in toxic clouds) and Deathmark—the player becomes a localized weapon of mass destruction.
The Clock is Ticking
The discovery of the infinite Grisha farm has sent ripples through the Mortal Shell 2 community. It completely shatters the game’s intended difficulty curve, turning a brutal Soulslike into a power fantasy where the player commands an army of beasts while wielding an invincible greatsword.
Given Cold Symmetry’s track record of deploying rapid balance patches—such as the recent patch that slashed boss health and tweaked the gold economy—it is highly likely that the Desolate Keep respawn bug is living on borrowed time.
Whether the developers decide to fix the Grisha’s respawn trigger, or nerf the immunity frames on the Great Martyr’s Blade entirely, a hotfix seems inevitable. But until that day arrives, the Undermether belongs to the players. If you want to experience the absolute peak of Mortal Shell 2‘s broken mechanics, grab your blade, head to the Desolate Keep, and start farming.
