Thalassa: Edge of the Abyss Walkthrough – Officer’s Deck Cabins

Welcome to the Into Indie Games walkthrough for Thalassa: Edge of the Abyss.

For more information on Thalassa: Edge of the Abyss beyond this walkthrough, check out the official website.

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Sea Floor

Out on the sea floor again, follow the sandy path until you get to a memory with Cam.

Once again, if you want to go for the “Heartless” achievement, ignore Cam. Otherwise, you can try to save her.

Keep going up the sandy path and you’ll make your way back round to the ship. You’ll drop onto the stern side of the Officer’s Deck.

Keep going until you find the way into the Officer’s Deck cabins.

Officer’s Deck Cabins

Clues in Officer’s Deck Cabins Hub

• Demi’s notebook (notebook on a bookshelf to the left after entering from the deck)
• Fault log (logbook on a shelf to the right after entering from the deck)
• Handkerchief (fabric floating near a painting of a ship)
• Isabel interview 1 (wax roll near the center of the room, below a table with a tea set)
• Padded Boots (boots lying on the floor near Thomas’ cabin door)
• Conduct Poster (poster on the wall roughly opposite Thomas’ cabin door)
• Red Lipstick (lying near a blue pillow, below the stairs going up)
• Maria Diary (book on a pillow under the stairs going up)

We can now solve some mysteries.

Mystery: Mess Hall Commotion 1

A recount of events: Maria diary
Sign of person involved: Kaymar portrait
Who was there?: Kaymar

Mystery: Mess Hall Commotion 2

Source of dispute: Unfinished Reports
Signs of friction: Kaymar Interview 1a
Who was involved?: Erik

Mystery: Investigating Kaymar

Signs of insubordination: Work feud
Signs of irresponsibility: Carvings M&K

Mystery: The Fling I 1

Matching attire: Handkerchief
Who owned this?: Isabel

After this flurry of mysteries solved, we can start poking into the rooms here.

We’ll begin with the Guest cabin, which was occupied by Jessie.

Clues in Guest Cabin

• Maria interview 1 (wax roll on the writing desk, near the typewriter)
• Sewing kit (near an armchair in a corner of the room)
• Editor letter (letter on a small desk under the corkboard)

You can try opening the door in the Guest Cabin, but it’s locked.

Instead, you can solve some mysteries now.

Mystery: The Journalist

Signs of different job: Editor letter

Mystery: Investigating Isabel 1

Anomalies: Maria interview 1
Anomalies: Missing records

Exit the Guest cabin and enter Thomas’ cabin, which is next to the Guest cabin.

Clues in Thomas’ cabin

• Submarine toy (to the left on entering Thomas’ cabin, below a submarine toy poster)
• Padded clock (alarm clock on the bunk)
• Thomas jacket (jacket falling out of a cabinet above the bunk)
• Engineering 101 (book lying on top of a fallen chair)
• Airplane posters (on wall next to the window)
• Mangled Piece (mechanical part on work desk, amidst a lot of small parts)
• Tool set (on the wall next to the toilet door)
• Foreign tool (on the desk next to the toilet door)
• Girl figurine (inside green cabinet next to main cabin door)

You can now solve a few mysteries.

Mystery: The Engine II

Thomas’ findings: Fault log
Suspicious sign: Mangled piece
Suspicious sign: Foreign tool

Mystery: Catastrophe on Board

Matching attire: Thomas jacket
Who was hurt?: Thomas
Matching equipment: Sewing kit
Who helped?: Jessie

Mystery: Late Night Wanderer I

Signs of sneaking: Padded boots
Signs of sneaking: Padded clock
Who snuck around: Thomas

Mystery: Investigating Thomas 2

Signs of his unreliability: Sneaky Thomas
Signs of his immaturity: Submarine toy

After these mysteries are solved, enter the toilet in Thomas’ cabin.

Clues in Thomas’ cabin’s toilet

• Discarded cans (sack full of cans under the wash basin)

We will now move to the other side of the cabins hub, to investigate Erik’s office.

Head to the ‘Office’ door, which is opposite Thomas’ cabin.

Clues in Erik’s Office

• Larsen’s Longitude (cyan book on bookshelf opposite the door)
• Crew Complaints (ring binder on bookshelf opposite the door)
• Broken inkwell (lying in trash bin near the desk)
• Note in book (green book on the desk)
• Erik’s drawers (inside desk drawer)
• Ink stain (behind the skewed framed certificate)
• University diploma (to the left of the framed certificate)
• Graduation Photo (framed photo on the shelf behind the desk)
• Personal request (letter floating near the framed photo)

We can now solve a few mysteries.

Mystery: Office Incident

Identifying source: Broken inkwell

Mystery: The Secret

Identifying culprit: Personal request
Who wrote this?: Isabel

Mystery: The Fling I

Sign of connection: The secret
Who was with her?: Erik

Mystery: The Fling II

Where it began: Leadership photo
Isabel’s passion: News article
Erik’s passion: Larsen’s Longitude

With all these done, interact with the closed door in Erik’s office to find that it’s blocked.

Return to the cabins hub and this time, enter the closet next to where we found the ‘Code of Conduct’ poster.

Clues in Officer’s Deck Cabins Hub Closet

• Hans Interview 2 (wax roll on first shelf from top)

We’re now ready to proceed from the Officer’s Deck Cabins. Re-enter Thomas’ cabin and open the closed door here to step out onto the deck.

Go down the steps. If you want to explore every inch of the Thalassa for the achievement, go right and explore the area past the broken wooden planks. There’s nothing to do there though, so return to the steps you got down from once you’re done.

Proceed forward toward the open door.

In the next segment, look around until you see a flare drop. Follow the light of the flare. Keep looking around and following the flares or props.

You will eventually get to a lit porthole. Go there to view a brief scene, and then open the door near the portholes.

Once ‘inside’, go for the cheque floating in the void.

On waking up from your vision, follow the on-screen instructions, and then use the wooden oar lying to your left to help break free.

Once you’re back up and free to move, head on into the open door ahead to explore the rest of the Officer’s Deck.

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