There’s lots to do inSpiritfarer.Whether it’s cooking a passenger’s favorite dish, rearranging their incrediblymessy ship layoutor just exploring one of the game’s many islands, there’s never a dull moment or lack of things to do.
Despite this,Spiritfarerfeaturescountless useful items, and it can be difficult to keep track of their uses in crafting and upgrading. This guide will help players see the exact cost of Summer’s sanctuary and its three improvements that, when they’ve all been crafted, will unlock the ‘Fully Improved: Summer’ trophy / achievement.

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How To Build Summer’s Sanctuary
Summer is one of the first characters encountered in Spiritfarer. The vegan, science-loving snake brings useful plant-growing advice alongside dramatic mini-games that provide access to Quartz and Aluminium. She’ll quickly become players' favorite aunt.
A few hours into the game, Summer will ask the player to build her a sanctuary. This will increase her happiness and complete the ‘Laying at the Ley Line’ quest. Players will require the following crafting materials:

8x Limestone
How To Improve Summer’s Sanctuary
Whether it’s to complete the ‘A Cold and Dreamless Slumber’ quest or just to do something nice for their slippery friend, players will want to improve Summer’s sanctuary. Somerequired resourcesare only obtainable after advancing some quests and improving crafting stations, so if players have no idea how to get some of the resources they need, it’s worth pursuing some of theirother quests in the meantime.
Some crafting stations are required to generate the resources that the sanctuary’s improvements use. They are as follows:
3x Limestone
How to Obtain
3x Oak Log
Cut down Oak trees, commonly found in the starting areas' outskirts.
2x Leek
Plant Leek Seeds in the Garden
HVAC System Upgrade (250 Glim)
This improvement will only be obtainable after making decent progress in Summer’s quest line and speaking to Albert.
2x Glass
Smelt Glass Bottles in the Foundry
When thefinal upgradehas been crafted, the ‘Fully Improved: Summer’ trophy / achievement will unlock.
Spiritfareris available on PC, PS4, Xbox One, and Switch.