Sister Splinter — Boss Fight Guide (Cling Grip Route)

Light spoilers for a Shellwood boss. Covers add control, lane clears, and the route to Cling Grip.

Summary

Boss: Sister Splinter
Area: Shellwood (upper sections)
Why it matters: Defeating her opens the route to Cling Grip (wall‑climb/wall‑jump), a required traversal upgrade.

From the central Shellwood bench, ride the lift up, move right and then up.
Cross two platforms to a leftward passage; continue left (pogo over the white flower) into the boss room.

Tight vertical chamber with intermittent vines/thorns that block lanes.
Vines can be destroyed in a few hits; boss slams also break them, creating new paths.

Three‑Hit Ground Pound (R→L→R): Hands raise, three slams in sequence. Counter: Dash toward the attacking hand to pass through and land one jump‑slash between beats.
Summon Vines/Thorns: Static stalks restrict movement. Counter: Clear lanes immediately—use wide‑arc swings or let her slams shatter them.
Summon Splinterbeaks (adds): One or two fliers descend and track you. Counter: Prioritize adds; drop AOE or bait them into her slams. Parry if pinned.

Note: On stagger, avoid body collision as she falls—reposition, then take safe hits.

Read the opener; if she starts the 3‑slam string, dash through each beat and get single‑hit punishes.
When vines appear, clear lanes first—don’t tunnel on boss damage while boxed in.
On add spawns, delete them with AOE or bait into slams; resume boss pressure only after the sky is clear.
Heals: Secure space, then heal; Warding Bell can provide a counter‑pulse during recovery.
Mid‑fight vine surge: Cut a corridor quickly, then re‑establish add control.
Stagger: Land 3–4 measured hits while keeping distance as she drops.

Ability: Threadstorm for instant AOE clears when adds arrive.
Tool: Warding Bell to shield during heals and emit a shockwave on contact.
Crest: Reaper Crest for wider arcs and multi‑target coverage in cluttered lanes.

Cling Grip route: After the fight, head right and climb toward upper Shellwood to obtain Cling Grip (wall‑climb/wall‑jump), unlocking higher paths and main progression.

Is Sister Splinter required? Yes—Cling Grip is a core traversal upgrade.
Do I need to break every vine? No—only enough to reopen safe paths.
What’s a reliable loadout? Threadstorm + Warding Bell + Reaper Crest is widely recommended.

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