Enter BDAC at the Atlantis Cafe cash register in The Park to open the hidden doorway behind the counter.
Head southeast from FBC Base and look for ATLANTIS above the street-facing cafe entrance. Inside, the counter clues and numbered dining tables give you the register combination.
Decode the table reservations and open the register

On the map, zoom in on the Atlantis SECRET marker in The Park. Its prompt directs you to visit the location to reveal a secret; the map also labels a LARGE RESOURCE CRATE. Close the map, enter the cafe through its front door and head to the order counter.

Inspect the Coffee menu on the counter to your right and the handwritten Table reservations note. The note records the regulars’ weekly bookings. In the dining area, look at the drinks on the numbered tables and match them to menu letters in reservation order.

Coffee menu letters and prices
| Menu letter | Drink | Menu price |
|---|---|---|
| A | Espresso | $3.00 |
| B | Iced Coffee | $3.50 |
| C | Caramel Latte | $4.50 |
| D | The Spiciest Chai | $3.50 |

At the central counter, interact with the cash register to bring up [ ENTER CODE ]. Use directional inputs to select B, D, A and C on its letter buttons, then submit the four-letter code. The register unlocks, and a concealed doorway swings open behind the counter.
The doorway opening is also the trophy moment: a Backroom Espionage notification appeared at that point in one showcase run.
STEP 1/4
25%
Descend into the basement
Pass through the opened doorway at the back of the counter and take the stairs down into the concealed basement’s storage hallway.
STEP 2/4
50%
Collect the note
Round the corner to collect Fuck You, Larry Note from the shelf.

STEP 3/4
75%
Reach the back room
Follow the lit corridor to the back room, where you’ll find the Large Resource Crate.

STEP 4/4
100%
Open the crate
Loot the crate for a Health Upgrade Point and Notice of Decommissioning.

That run’s pickup banner showed 2/3. You’re working toward 3 Health Upgrade Points, which increase your maximum health once you’ve collected them.
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