Giant Spider Crab Boss Guide

Summoning with the Empty Beer Can

Buy a full beer from the tavern for $10, give it to the beach fisherman NPC, and he will drink it and toss you the Empty Beer Can. This is the Rage Bait needed to summon the Giant Spider Crab. Head to the lighthouse tidepool on the northeast side of the starter island and cast the can into the shallow water. After a 5-second rumble animation, the Spider Crab bursts from beneath the sand and the arena seals with rock barriers, preventing escape until the fight concludes.

You can re-fight the Spider Crab as many times as you want by purchasing another beer. Subsequent kills still drop gold but not additional key parts.

Combat Strategy

The Spider Crab has three main attack patterns that cycle throughout the fight:

• Claw Swipe: The crab raises one pincer and swings horizontally. Telegraphed by a 1-second wind-up with a clicking sound. Dodge by stepping backward or circling behind the lighthouse pillar. Deals 20 damage on hit.
• Shell Slam: The crab lifts its entire body and slams down, creating a small shockwave. Jump or stay at range when you see it rear up. Deals 35 damage and briefly stuns you if hit.
• Burrow Attack: The crab digs underground and tracks your position for 3 seconds before erupting upward. Watch for the sand trail moving toward you and sidestep at the last moment. Deals 25 damage but leaves the crab flipped on its back for 4 seconds — your best damage window.

Phase Breakdown

Phase 1 (100%–50% HP): The Spider Crab uses Claw Swipe and Shell Slam in a predictable rotation. Stay near the lighthouse pillar and circle it to dodge swipes. Attack the legs between combos with your Knife for consistent damage.

Phase 2 (50%–25% HP): The crab becomes enraged, glowing red. Attack speed increases by 50% and it begins using the Burrow Attack. This phase is actually easier if you stay calm — the Burrow Attack leaves it vulnerable for longer than any Phase 1 opening. Bait out burrow attacks by standing still until you see the sand trail, then dodge.

Phase 3 (25%–0% HP): The crab retreats to the center of the tidepool and begins rapid-fire Claw Swipes in all directions while slowly advancing. Sprint to the edge of the arena and use ranged attacks (thrown fish, harpoon) if available. If melee only, wait for the brief pause between swipe combos to dash in, land 2 hits, and dash out. At 5% HP it does one final Shell Slam — dodge this and finish it off during the recovery.

Reward: Boat Key Part #1

Upon defeat, the Spider Crab drops Boat Key Part #1, 200 gold, and occasionally a Spider Crab Shell Shield (10% drop rate). Take the key to the dock mechanic NPC to unlock your boat engine ignition. This is the gateway to the rest of the archipelago — without it, you are stranded on the starter island. The Spider Crab Shell Shield is a cosmetic back accessory that reduces fall damage by 15%.