Invite the charge
Stay at medium distance. Too far away encourages awkward jumps; too close leaves no time to sidestep.
Lighthouse · Required opening boss
How to beat Spider Crab
Buy the Beer Can, give it to the Lighthouse Keeper, and use the Empty Beer Can he returns as bait. Bait the Spider Crab into charging, sidestep at the last moment, then attack from behind while it is dizzy. Return its meat to the Keeper for the Boat Keys.
Spider CrabLighthouse
- Trigger
- Empty Beer Can
- Setup
- Crab Fishing Rod
- Hand-in
- Spider Crab meat
- Unlock
- Boat Keys and access to Island 2 · Forest
Trigger → fight → hand-in
The complete Spider Crab route
- 01 · Buy the bait
Give the Beer Can to the Lighthouse Keeper
He drinks it and returns the Empty Beer Can. Keep that can; it is the only trigger for the opening boss.
- 02 · Start the fight
Cast the Empty Beer Can from the Lighthouse
Equip it on the Crab Fishing Rod, top up health and hunger, then cast. The encounter begins as soon as Spider Crab lands.
- 03 · Force the miss
Sidestep its charge and punish the stun
Stay close enough to invite a charge. Move across its path, circle behind the dizzy crab, land two or three safe hits, then reset.
- 04 · Leave the island
Return the meat for the Boat Keys
Pick up the boss meat and hand it to the Lighthouse Keeper. Buy the Radar before sailing if you have the money.
The fight
Turn the arena into your shield
Pufferfish wins when you stop moving. Your job is to keep clean sand ahead of you and a palm trunk between each charge.
Move sideways, never straight back
Cross the charge line so the crab misses cleanly and becomes dizzy.
Take two or three hits
Do not overstay the stun. Leave before it recovers and repeat the same reliable cycle.
Keep the escape bar alive
Use every stun window so the white bar under its health does not empty.
Fix the failed run
What went wrong?
Use the symptom, make one correction, and go again.
The Empty Beer Can is missing
Buy the Beer Can and give it to the Lighthouse Keeper first; the full can is not the boss bait.
Spider Crab keeps jumping
Stop creating extreme distance. Stay close enough to trigger its ground charge.
You get hit during every opening
Attack from behind only after the charge misses. Leave after two or three hits.
The boat stays locked
Carry the Spider Crab meat back to the Lighthouse Keeper. The kill alone does not award the keys.
Fast answers
Spider Crab FAQ
What bait summons Spider Crab?
Use the Empty Beer Can returned by the Lighthouse Keeper after you give him the purchased Beer Can.
How do I stun Spider Crab?
Stand at medium distance, wait for its charge, and sidestep. It becomes dizzy after missing.
What do I get for beating Spider Crab?
Return its meat to the Lighthouse Keeper to receive the Boat Keys and leave the starting island.
Guide sources
Gameplay route checked 2026-10-02 for Patch 1.1.3.
- Mobalytics Spider Crab Boss Guide ↗ — Trigger, charge stun, escape timer and Boat Keys hand-in.
- PC Gamer Spider Crab Guide ↗ — Melee preparation and terrain strategy cross-check.