Field guide
01Start with the Lighthouse Keeper quest
The Empty Beer Can belongs to the Who Stole My Beer quest at the Lighthouse, not to a general fishing loot table. Current walkthroughs place the quest immediately after the tutorial and identify the long-legged culprit as the Spider Crab. Speak to the Lighthouse Keeper first so the purpose of the item is clear before spending money or casting.
This framing matters because the can is a progression lure rather than a collectible to keep indefinitely. It is used to bring out a specific encounter that unlocks travel from the starting area. A player looking only for ordinary catches should not expect it to behave like a standard lure.
02Turn one Beer Can into the lure
Buy a single Beer Can from the shop and take it to the Lighthouse Keeper. The current guides agree that he returns an Empty Beer Can, which can then be equipped on the fishing rod. Their reported price is $12, but the important route fact is the exchange rather than the currency value.
Equip the returned can before casting. It draws the Spider Crab instead of an ordinary fish. If the wrong lure is equipped, the quest encounter will not begin, so check the active item before treating the problem as a failed spawn.
03Prepare a weapon before casting
Do not summon the Spider Crab with no way to finish the fight. Multiple walkthroughs recommend carrying a Knife first, and they warn that bare-handed attempts are not a reliable path through the encounter. This is a preparation check, not a claim that every other melee option is impossible to use.
A $45 Knife price and a behind-the-target attack pattern have been recorded for an early build, but they are not fixed requirements after patches. The stable advice is to bring a confirmed melee tool and avoid treating the first cast as disposable. Keep the lure and route hand-in ready before casting.
04Finish the quest by returning the shell
After the Spider Crab dies, collect its shell and bring it back to the Lighthouse Keeper. That return completes Who Stole My Beer and gives the boat keys. The shell is the progression hand-in, so do not leave the fight area with only ordinary material in the inventory.
If the quest remains open, check the simple route in order: was the Empty Beer Can equipped, was the crab defeated, was the shell collected and was it given back to the keeper? This is more reliable than buying extra cans or assuming the boat itself is a shop unlock. The route is a quest exchange followed by a trophy return.
05Treat tactics as observations, not hidden rules
Some guides recommend dodging the crab, moving behind it and striking during its recovery. Those tactical descriptions can help a first attempt, but they come from launch-day walkthroughs rather than a developer combat manual. Use them as a starting pattern and follow the live encounter if its behavior differs.
This page does not publish an exact health total, stun duration, damage requirement or respawn rule. None is established by a first-party reference in the collected sources. The durable answer is the quest chain itself: Beer Can, Empty Beer Can, Spider Crab, shell, Lighthouse Keeper and boat keys.