Mortal Shell 2 developer Cold Symmetry has revealed the Soulslike title won't have conventional difficulty settings, but will instead offer special in-game items that let players tailor how challenging the game feels. Rather than a simple easy-to-hard slider, these items alter core mechanics and world conditions, giving players granular control over their experience while preserving the game's overall balance rather than simply weakening enemies.

Players seeking an easier run can use the Slayer Seal, which restores health and resolve when executing enemies with riposte attacks, though equipping it disables achievements. Those wanting a tougher challenge can find the Gloombound Flame and take it to Marrow Keep to unlock Night Mode, which removes the sun and introduces new enemies, events and dungeons alongside extra rewards. Other items fine-tune combat further: the Untarnished Seal offers traditional parrying, while Vatra's Seal grants a temporary hardened shield for players who struggle with precise deflection timing, though its protection runs out via a depleting meter.