How many sidearms are in Mortal Shell II?

The exact count depends on the current patch. Multiple sidearms are confirmed by official material and community guides.

Can I upgrade sidearms?

The official store mentions strategic upgrades for ranged weapons. Check your current in-game menu for available upgrade options.

Did Patch 86328 change sidearm locations?

Yes. The Crossbow was moved to a new location in Patch 86328.

Weapons & Upgrades

Mortal Shell II All Sidearm Locations: Firearms Guide

Published 2026-08-25 · Updated 2026-08-25

Find every Mortal Shell II sidearm with a safe exploration method, weapon-type breakdown, and tested loadout synergies.

Accuracy note: Source-backed and checked 2026-08-25. Patch-sensitive values are excluded unless verified.

Sources

Checked on 2026-08-25. Store details and balance may change after patches.

How Sidearms Work

Sidearms are ranged firearms that complement your melee weapon in Mortal Shell II. The official site highlights their tactical value alongside melee combat. Sidearms use limited ammunition, so every shot should have a purpose: interrupting an enemy, finishing a low-health target, pulling one enemy from a group, or recovering lost Gloom (Patch 86328+).\n\nSidearms are not just backup damage. A well-timed sidearm shot can prevent an enemy attack, maintain posture pressure while you recover, or create safe distance. Treat your sidearm as part of your build, not an afterthought.

Sidearm Types and Roles

Mortal Shell II sidearms fall into several functional categories:\n\n1. Fast interrupt tools: Low damage but quick firing speed. Best for stopping charging enemies or finishing pups.\n2. High-damage cannons: Slow but powerful. Best for burst damage during posture breaks or against stationary targets.\n3. Mid-range balanced: Moderate speed and damage. The most versatile choice for general exploration.\n4. Special effect sidearms: Some sidearms may apply status effects or have unique behavior. Verify current in-game descriptions for patch-accurate details.\n\nYour sidearm should cover a weakness in your melee weapon. If you use a slow greatsword, a fast sidearm helps when enemies close the gap during recovery. If you use a fast rapier, a high-damage sidearm provides burst for posture breaks.

Where to Find Sidearms

Sidearms are distributed across the world in several ways:\n\n1. Early vendors: The first merchant you encounter typically sells a basic sidearm. This is your starting firearm and is sufficient for the early game.\n2. Optional dungeon paths: Several sidearms are hidden in side rooms off the main dungeon route. Look for breakable walls, alternate doors, and elevated platforms.\n3. Mini-boss rewards: Defeating certain mini-bosses yields sidearms as part of the loot.\n4. Hidden world locations: Some sidearms require a short detour from the golden path. The official store description explicitly rewards exploration with weaponry.\n\nBecause Patch 86328 moved the Crossbow to a new location, verify any sidearm guide is dated after August 22, 2026.

A Safe Sidearm-Hunting Method

1. In each new region, check all vendor inventories before leaving.\n2. Explore dungeon side paths before fighting the main boss.\n3. When you find a new sidearm, test it immediately against a familiar enemy:\n - How fast is the firing animation?\n - How long is the recovery?\n - Does it stagger common enemies?\n - How many shots does it take to finish a low-health target?\n4. Compare it with your current sidearm. Keep the one that better covers your melee weapon's weaknesses.\n5. Record the sidearm's location and your test results for future reference.

Sidearm and Build Synergy

Fast melee weapon + high-damage sidearm:\n- The fast weapon maintains pressure; the sidearm delivers burst during posture breaks.\n\nSlow melee weapon + fast interrupt sidearm:\n- The sidearm covers the gap when enemies close during your long recovery.\n\nTank Shell + balanced sidearm:\n- Reliable and consistent. Works in most situations without specialization.\n\nMobile Shell + special effect sidearm:\n- Use mobility to create ideal firing angles for sidearms with positioning requirements.