The Shattered Descent solves the five biome challenges and the 33 expeditions: a single-bar boss

Untouchable, Vincible, War Within, the 33 expeditions and the 30 OverDrive kills share a stage: the third biome, short, no detours and Rhabdom. How to do each, with which modifiers and the cloud save as a safety net.

Completing them unlocksUntouchable trophyUntouchableSilver8.90%

And it counts towards Vincible, War Within, Fatal Triptych, Fall From Grace, Carcosan Cartographer, OverDriven, required for the platinum.

The EveryTrophy team3 min readPublished on 14/09/2026Updated on 14/09/2026Covers 7 of the 54 trophies

Why the Shattered Descent, and with which modifiers

The third biome has two things no other has: it never forces you off the main path and its boss, Rhabdom, has a single health bar. Rushing and ignoring enemies, it is done in about four minutes.

That makes it the stage for Untouchable (8.9%, the hardest trophy in the game): a biome without direct non-Corruption damage and without losing Adrenaline. Save it for last, with a complete Armor Matrix, enable Damage Enhancement III to shorten Rhabdom and kill a few enemies on the way to arrive with OverDrive charged. Unlimited Protection Modifiers from the settings are allowed and block nothing.

The safety net: reach the room before the boss, close the game and upload the save to PS Plus cloud. If you get hit against Rhabdom, download and repeat only the fight.

Vincible (16.5%) is the same biome without ever holding the Shield. It can be combined with Untouchable in the same run, but it is safer to keep them separate.

Carcosan Cartographer (10.7%): 33 full biomes with at least one modifier active at Primary. Keep one on always from the moment they unlock after Bastion; whatever is missing at the end is farmed here, four minutes per expedition, leaving by the teleporter after Rhabdom.

Key

For Untouchable: reach the room before Rhabdom, close the game and upload the save to the cloud. If you get hit at the boss, download and repeat only the fight, not the biome.

Corruption, three deaths, the fall and OverDrive

War Within (25.6%): Corruption is the Integrity segments removed by yellow projectiles. Corrupt most of the bar — until corrupted projectiles deal regular damage — and in that state finish the biome: boss dead and next biome reached. Do not use the Power Weapon, because it removes corruption. Corruption Enhancement III builds the bar fast; Damage or Armor Enhancement III keeps you alive.

Fatal Triptych (29.6%): die three times in one cycle. The trick is Second Chance: clearing a Nightmare Gate restores it. Die, gate, die, gate, die. Or enable the Second Chance Overlord modifier.

Fall From Grace (8.4%, the rarest in the base game): eliminate an enemy without shooting it. With the Parry from the Blighted Marsh, send a red Nova back into an enemy standing over a gap so the stagger knocks it off. Find platforms and enemies or traps that fire red, stand with the drop in front of you and bait the shot. Any damage from your weapons voids the attempt, and some airborne enemies stay in the air while staggered: pick a ground one.

OverDriven (9.0%): 30 OverDrive kills in one cycle. The Armor Matrix nodes that reduce the damage needed to charge it are mandatory, and even then you will need to chain several biomes without dying. Use it only on packed groups: it has an area of effect.

The trophies involved

Each one links to its section inside the full Saros trophy guide.

UntouchableSilver8.90%
Complete a Biome without taking direct, non-Corruption damage or losing Adrenaline.
Original name: Untouchable
VincibleBronze16.50%
Complete a Biome without using the Shield.
Original name: Vincible
War WithinSilver25.60%
Reach maximum Corruption level and survive.
Original name: War Within
Fatal TriptychSilver29.60%
Die 3 times during a single cycle.
Original name: Fatal Triptych
Fall From GraceBronze8.40%
Use the environment to eliminate a hostile without shooting it.
Original name: Fall From Grace
Carcosan CartographerBronze10.70%
Use the Carcosan Modifiers to embark upon and survive 33 expeditions.
Original name: Carcosan Cartographer
OverDrivenBronze9.00%
Dispatch 30 hostiles using OverDrive during a single cycle.
Original name: OverDriven

Other Saros guides

Eight Overlords, three acts and a true ending you lose by finishing off the King
How each Overlord is fought, what each one unlocks — the modifiers after Bastion, the Grapple, the Parry — and the game's only decision: in the second King fight you have to go through the gate without finishing him.
Nothing depends on luck: augments have fixed rooms and Halcyon is in surplus if you choose well at the chests
The eight progress trophies across cycles: when the Banyan Tree opens on each of its four occasions, what the seven Nightmare Gates give, how much Halcyon there is per biome and why Second Chance is the first purchase.
475 kills with no per-weapon counter: the rule is to keep every new weapon until 25
Eleven weapon trophies: which biome each class appears in, which trait or alt fire solves each challenge, and why Full Arsenal and Soltari R&D demand picking up and firing everything you find.
Blue is absorbed, red is parried, yellow corrupts: the three rules behind six trophies
Saros's mechanics trophies fall on their own once you understand the projectile colour code. When each tool unlocks, what Catch And Release requires before you try, and why dying is the first trophy.
Nine trophies that do not count towards the platinum: one per biome and five Alphas up close
Update 1.005.001 in June 2026 added Photo Mode and nine separate trophies. What to frame in each biome — no need to save the picture — and why Acolyte's Haven is the place for Alphas.