Servant of the Lake Handkerchief: The First Aid Achievement
The Servant of the Lake handkerchief item is part of the First Aid achievement in Day 3's finale — pull three bullets and bandage Aldous's wounds.
The cloth players search for as the "handkerchief" is part of Day 3's finale, in "The Departure" chapter deep in the secret cave beneath the estate — not an early-game side task. The official achievement it belongs to is called First Aid; "handkerchief" is simply the community nickname for the cloth item involved, not an in-game achievement name.
An earlier version of this guide placed this scene on Day 1 or 2 with a single leg wound — that description didn't match up with any confirmed footage or achievement listing, and five independent walkthrough sources now agree on a different set of details below. If you've seen an older write-up describing a leg injury from earlier in the game, treat the version here as the corrected one.
Step-by-step: the First Aid achievement
- In the finale's hidden cave, approach Aldous, who is lying wounded alongside William. He'll ask for water.
- Pull a fork out of his shoulder first — this is the action that actually starts the sequence, not a leg injury.
- Check his leg: lift the pant cuff to reveal three separate bullet wounds.
- Use the fork from step 2 to remove the bullets from all three wounds.
- Take the cloth (the "handkerchief") and use it to pack and close each of the three wounds.
- Completing all three unlocks the First Aid achievement.
Why this is called First Aid, not 'handkerchief'
Search interest around this achievement tends to focus on the cloth item itself, but the achievement's actual name centers on the act of treating Aldous's wounds. If you're hunting for it in your achievement list, look for First Aid rather than anything mentioning cloth or handkerchief directly.
Where this fits in the story
This scene happens during the game's climax, after the final confrontation between the family has already turned violent. It's part of the emotional turn where Aldous, badly wounded, admits he misjudged William — treating his wounds here is what leads into that dialogue, rather than being a side objective disconnected from the main plot.
Frequently asked questions
What is the handkerchief used for in Servant of the Lake?
It's used to bandage three bullet wounds on Aldous's leg during the Day 3 finale, as part of the First Aid achievement.
Is handkerchief an actual achievement name?
No — the achievement is officially called First Aid. Handkerchief is a community nickname for the cloth item used in it.
When does this happen in the story?
During Day 3's final chapter, The Departure, in the hidden cave beneath the estate, after the confrontation between the family turns violent.
For the rest of the ending, see the Day 3 walkthrough and the full achievements list.