What to know
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This achievement is missable and must be done in Chapter 4 during Excalibur’s personal questline.
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You must progress through specific story beats: speaking to Excalibur, getting him a burger, following him underground, interacting with key objects, and finishing with a final interaction.
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The achievement itself triggers when you pet Excalibur at the very end of his quest, not simply by talking to him.
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This is a one‑time‑only objective; you cannot skip or replay it later on the same save unless you reload an earlier Chapter‑4 checkpoint.
In Replaced, Excalibur’s side‑quest revolves around helping Reach reach a hidden underground area. The “We are all here for it” achievement is effectively the capstone of that quest, rewarding you for seeing his story through from start to finish.
The quest is linear and mostly guided by dialogue, but there are a couple of concrete steps you must perform in the correct order: starting the quest with Excalibur, retrieving a burger from the bar, and then following him through a short underground sequence with specific interactions.
Replaced: Excalibur side-quest details
How to start Excalibur’s quest in the safe zone
Excalibur’s storyline kicks off in Chapter 4 inside the main safe‑zone hub.

Excalibur will be standing near one of the main walkways. To start the quest, approach Excalibur and press the interaction prompt to speak with him.

Let the dialogue play out; he will mention being hungry or needing a specific item, which branches into his quest. You can move on to retrieving the burger.
Get the burger for Excalibur
Go to the Western Station.

Go right to the Food area.

Walk up to the bar area.

Get the burger ‘to go’.

Exit the bar and return to Excalibur’s usual spot.

Interact with Excalibur again and choose the option that involves giving him the burger or confirming that you’ve brought it.
Once that dialogue finishes, Excalibur will start going somewhere else, signaling the start of the next major leg of the quest.

Follow Excalibur to and through the underground
After the burger exchange, Excalibur will begin to move toward a side corridor or service hatch that leads underground.

Follow Excalibur, and go through the door before which it sits.

Proceed through the door.

Interact with the glowing wall points
Once you and Excalibur reach the underground chamber, the environment will highlight several glowing interaction points on the walls.
From the bottom of the stairs, go left.

Interact with all the ‘Look’ prompts.

Then go left where Excalibur will be waiting before a wall.

Here, you’ll find a Pickaxe and a letter.

Complete the quest and earn the achievement
Approach Excalibur once more and “pet” it. Immediately afterward, the “We are all here for it” achievement will unlock.

This final pet interaction is mandatory; simply talking to him or finishing the cutscene without performing the pet command will not trigger the achievement.
Rewards and progression notes
While the achievement is purely cosmetic in terms of game progression, completing Excalibur’s quest does contribute to your overall completion percentage and plays into the companion‑story arc in Chapter 4.
There are no additional upgrade points, gear, or gameplay modifiers attached to this specific quest; it exists mainly to flesh out the world and support the achievement‑hunting route.