Caged Hystrix is found near the exit of the Chamber of Becoming after you defeat Sariel, the Endless, reached from Silent Steps in the Ruins of Mammon.
The Caged Hystrix is one of the eight sidearms in Mortal Shell 2, and it is welded to a single route: the Sariel, the Endless fight in the Ruins of Mammon. You do not stumble onto it in the open world — you earn it by clearing the Chamber of Becoming dungeon, and even then it sits waiting past the boss arena rather than dropping into your inventory. Here is exactly where it is, how to reach it, and what it actually does once it is on your Shell.
Caged Hystrix at a glance
| Trait | Value |
|---|---|
| Type | Sidearm (rapid projectile, ranged) |
| Location | Chamber of Becoming dungeon, near the exit |
| Region | Ruins of Mammon, reached via Silent Steps |
| Required boss | Sariel, the Endless |
| Nearby rewards | Sariel’s Shell, Clockwork Scythe |
| Description | “The contraption pierces the creature trapped inside, prompting a violent and often useful reaction.” |
Everything about this sidearm hangs off one encounter, so the fastest way to think about it is as a Sariel-route reward rather than a standalone pickup. Some route notes attach a 650 Coins map price to it, but that figure only turns up in limited reports, so don’t count on it as a fixed cost when you plan your run.
How to get Caged Hystrix in Mortal Shell 2
Key The Caged Hystrix is gated behind the full Sariel encounter, which plays out in two stages — an overworld ambush that cracks the dungeon open, then a rematch inside it.
Fast-travel to Silent Steps
From the Silent Steps beacon in the southern Ruins of Mammon, head southeast toward the large stone platform.
Trigger the Sariel ambush
Sariel, the Endless attacks you in the overworld here — chip his health down until he phases through the wall.
Enter the Chamber of Becoming
Losing enough HP forces Sariel to open the dungeon entrance behind a statue, so follow him inside.
Clear the dungeon to the rematch
Push through the Chamber of Becoming until you reach the arena where Sariel waits for a second fight.
Break the resurrection tablets
Destroy the four stone tablets around the arena to stop his endless revivals, then finish him off.
Collect the boss rewards
Beating him unlocks Sariel’s Shell and drops the Clockwork Scythe in the same room.
Loot Caged Hystrix near the exit
Climb the stairs at the back of the chamber and follow the path out — the sidearm sits in the last room before you leave. You also unlock Spiked Trophy after defeating Sariel here.
After the fight, climb the stairs at the back of the chamber and grab the sidearm before you exit — the boss rewards drop separately, so it is easy to walk out thinking you already have it.
How Caged Hystrix plays in combat
Caged Hystrix is a rapid-fire sidearm — it throws out a quick barrage of projectiles rather than one heavy shot, which makes it a natural fit for keeping pressure on enemies from range. Against a single target it lets you poke and stagger without closing the gap, and against a pack it can sweep across several bodies fast enough to thin them out before they reach you.
That speed also makes it one of the better exploration tools. Weaker enemies fold to a short burst, so you rarely need to swap to your main weapon for cleanup, and its ranged hits can trigger environmental objects — the blue immortal flame objects scattered around the world respond to it during exploration. If you are running a build that leans on frequent ranged hits and ranged stagger, this is the sidearm that feeds it.
Compatible Tarstones and where they take the sidearm
| Tarstone | Effect |
|---|---|
| Splitting Stone | Fires multiple projectiles per shot with no extra Resolve — scaling from 2 shots at 70% damage up to 4 at 50% as it levels. Pure spread and crowd clearing. |
| Hag Stone | Spend 20 Resolve to infuse shots with Poison, lasting 4 shots at Lv1, 8 at Lv2, and permanent at Lv3. Sustained damage-over-time pressure. |
| Accursed Stone | Same infusion idea as Hag Stone but applies Curse instead, lasting 4 and 8 shots across its levels. For Curse-leaning builds. |
| Volatile Fragment | Enemies killed by ranged attacks explode for splash damage, scaling from 15 up to 35. Turns group kills into chain damage. |
| Rupturing Stone | Critical projectiles deal Break Damage, from 8 up to 20 as it levels. Best when you want to stagger and open enemies up. |
| Solnir Shard | Spend 25 Resolve to launch a heavy round in an arc that explodes on impact, dealing 70 then 120 splash damage with a wider blast at max level. Your heavy AoE option. |
| Strange Remnant | Spend 15 Resolve to fire a chaining stream — each chain projectile deals 20 damage and bounces to as many as 4 enemies. Multi-target burst. |
Where the Caged Hystrix really opens up is through Tarstones, the sidearm gems that reshape how it fires. It accepts a wide spread of them, and each one pushes it toward a different playstyle — more projectiles, status infusions, splash kills, break pressure, or heavy burst rounds. Pick the stone that matches the build you are already running rather than trying to cover everything at once.
Video help:
Is Caged Hystrix worth using?
Yes — it is a strong, general-purpose sidearm, and one of the more reliable picks for ranged pressure and thinning out groups. Its rapid fire covers the two jobs sidearms exist for, distance damage and crowd control, without asking you to commit to a niche.
It gets noticeably better once you invest a Tarstone or two, since the base weapon is a solid delivery system and the stones are where the real specialization lives. It shows up near the top of most sidearm discussions, but treat that as a sign it is a safe, versatile choice rather than a guaranteed best-in-slot — the right sidearm still depends on your Shell and build.
Related Mortal Shell 2 guides
Frequently Asked Questions
Is Caged Hystrix given to you automatically after beating Sariel?
No. Beat Sariel clears the path, but the sidearm is a manual pickup in the last room before the dungeon exit. Climb the stairs behind the arena and grab it yourself, or you’ll leave without it.
Does the Sariel fight give you anything besides the sidearm?
It does. The same encounter awards Sariel’s Shell and drops the Clockwork Scythe, both collected around the boss arena. All three come from this one route, so sweep the whole Chamber of Becoming before you exit to the Silent Steps area.
Are the exact base stats for Caged Hystrix reliable yet?
Not really. Its base damage, magazine size, and fire rate aren’t consistently documented — most information covers the Tarstone modifiers rather than the raw weapon numbers, so treat any specific base-stat figure as unsettled for now.
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