Hollow Knight: Silksong – Sister Splinter Boss Guide: Abilities, Phases, and Reward

In the sprawling, treacherous region of Shellwood in Hollow Knight: Silksong, players will inevitably cross paths with a formidable foe: Sister Splinter. This boss guards the path to the invaluable Cling Grip ability, which allows Hornet to climb walls and traverse the world with greater ease. As of 2026, with the game fully released and players exploring every corner of Pharloom, Sister Splinter remains a significant early challenge. Without proper preparation, her relentless slams, spiked vines, and summoned minions can quickly overwhelm even the most seasoned adventurer. This guide breaks down the optimal loadout, phase-by-phase tactics, and the ultimate reward for defeating this arachnid menace.

Recommended Abilities and Tools

Before entering the arena, players should ensure they have unlocked the Reaper Crest and Thread Storm ability from Greymoor. These two tools are game-changers for this fight. Additionally, the Sting Shard tool provides valuable area-of-effect damage. While any familiar setup can work, this trio offers a balanced mix of defense and aggression.

Tool/Ability
Purpose

🗡️ Reaper Crest
Generates more silk after healing, enabling frequent Thread Storm usage.

🌪️ Thread Storm
Parries and kills Splinterbark enemies, and destroys multiple Spiked Vines at once.

💥 Sting Shard
Deals AoE damage, pressuring the boss and mobs while gathering silk.

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