A01Open for Business
Complete your first day of service.
Story-given.
All 15 decoded — hidden story ones, and the ones that need a full crew.

Complete your first day of service.
Story-given.
Black out and get hauled back once.
Everyone gets this one. No shame in it.
Dive past 30m for the first time.
First stop after the tier-2 tank.
Bring back 15 fish in one dive.
Sardine runs in the shallows farm this fast.
Daily average plating score ≥90.
Memorize the rice table first.
Finish an evening service with 5 players.
Lobby tag "Friday" fills fastest.
Catch one giant squid.
The three-phase fight — see Co-Op.
Catch an opah on a full-moon night.
Once per 7 in-game days. Miss it, wait the week.
The kasa-hat guest visits 10 times.
He only orders "today's deepest" — a lore signal the achievement never spoils.
Transcribe the sunken izakaya's entire menu.
Requires the "observe" action on every wall line (most think it is a texture). When "today's deepest" lights up, the boat goes quiet.
Place a sake bottle in the izakaya rack's empty slot.
Any sake works — the placement triggers it. Buoy 3 gains a new line (no spoilers; go listen).
Trigger buoyancy compensation 20 times in one ascent.
The community-declared heresy practice. The achievement is the devs' wink: "we see you".
Craft the Deep Blue unknown roll.
Completed by exactly nobody. It needs what is behind the door. The ID is confirmed live.
??? (empty unlock field)
The data miners' find: the achievement exists with a blank condition. All three theories point at it. When the door opens, it gets its description.
??? (same)
Last in the list. Two blanks, side by side. Lore-floor consensus: "one is for the door, one for behind the door." Nobody knows which is which.