Stealth is crucial for completing certain tasks in *Kingdom Come: Deliverance 2*, and the "Storm" quest is a prime example. This quest concludes the main storyline in the Trosky region and introduces the Kuttenberg region. You'll begin this quest significantly weakened, lacking armor, weapons, and essential items like Saviour Schnapps, having suffered torture which also impacts your stamina and health.
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Fortunately, you can recover some basic equipment from the guards Katherine dispatched when freeing you. While not ideal, it's better than nothing, and Katherine provides her dagger, enabling stealth kills. Your objective is the top of the Crone in Trosky. The guards along the way are spaced out enough to allow for stealth takedowns or skillful use of distractions to bypass them.

At the Crone's peak, you confront Istvan Toth. This encounter doesn't affect the ultimate game ending, so choosing the dishonorable option is viable if combat feels too risky given your weakened state. A direct duel with Toth is dangerous due to your low health. After defeating him (or choosing the dishonorable route), search the room for everyone's belongings and secure important documents.

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After securing your belongings, return to the dungeon where your companions remain. They'll re-equip themselves and reveal the escape tunnels, making this a relatively straightforward part of the quest.
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The truly challenging portion of "Storm" begins now. Maintaining minimal conspicuousness is paramount to avoid detection. Guards will call for reinforcements, making encounters with multiple enemies highly probable. Your weakened stats further complicate matters, making stealth kills and knockouts more difficult.

Take the uphill path to the right, leading to a larger, but heavily patrolled, area. This path will take you to Mika's location. Eliminate the guard silently and free Mika; she’ll provide directions to your next objective.
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A significant stealth section follows. Use the map markers to follow Mika's instructions, heading east and southeast towards the Apollonia main road. Stay to the sides, utilizing bushes for cover, to avoid detection. The marked area is larger than it appears; progress roughly halfway to trigger the concluding cutscene. Remember to use stones to distract guards. The cutscene concludes your role in this area, leading you to the Kuttenberg region.

"Storm" uniquely demands stealth, unlike many other quests in *Kingdom Come: Deliverance 2*. Prioritizing stealth skills before this quest is highly recommended. Having relevant perks will significantly aid in avoiding detection.
*Kingdom Come: Deliverance 2 is available now on PlayStation, Xbox, and PC.*