How to Open Otto's Room in The Outer Worlds 2: Completing & Solving

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After you send the Vox Relay and escape Paradise Island in The Outer Worlds 2 to explore other planets, you’ll face two options: go to Dorado, which takes you to the next main story location, or visit the ACS Free Market. The market is operated by Sub Rosa, a black market organization that operates on the edges of the Arcadia system, trading with any side willing to make a deal. The market has a mysterious past that most people there aren’t keen to discuss, but some may still ask questions about it.

How to Start The Last Voyage of the ACS Free Market Quest

When you arrive at the ACS Free Market, you’ll notice tons of strange advertisements. There, you’ll overhear a conversation between Stallworth, a member of the Order, and Seybold, a Sub Rosa guard. Seybold refuses to share information with Stallworth because she’s associated with the Order, which makes her hesitant to speak openly.

You don’t have to worry about her secrecy. You can approach Stallworth, chat with her, and even agree to help her find information. She claims it’s just for cataloging, since the market’s history is pretty unclear. Since no one else is willing to talk, she wants you to investigate for her.

Gathering Information for Stallworth

To begin your investigation, Stallworth recommends checking out several spots:

The saloon
The bazaar
The Sub Rosa headquarters
The wrecks around the ship

These locations will give you clues, but progress might be slow. Here are some more direct avenues to explore:

Interviewing Prospero

The first person to talk to is Prospero, who’s in the 2nd Choice Saloon in the bazaar. It’s best to speak with Tristan and the bartender first to keep things quiet and avoid drawing too much attention. Prospero claims he knows about the station’s tragic history but will only tell you if you bring him his favorite drink: Glacial Age Icebery Aged Whiskey.

If you have the right skills, you can bypass this requirement, but the easiest way is to find the whiskey nearby—behind the bar, sitting untouched. Once you grab it, bring it to Prospero, and he’ll share some dramatic but somewhat truthful details about the market’s past.

Searching the Sub Rosa Terminal

Next, you can investigate the Sub Rosa headquarters, located beneath the saloon. The entrance is through a locked door next to the bar—originally sealed, but accessible after completing Tristan’s first quest. You can also access a section earlier by sneaking through a vent in the toilets, which leads behind the door. The guard below is asleep, so you can move freely once inside.

Access the terminal inside and retrieve data, which reveals that the ACS Free Market had taken out an insurance policy—possibly indicating someone planned to profit from the ship’s destruction. Plus, there’s a strange, unrelated entry about Milverstreet worth checking out.

Getting Otto’s Information

Otto is another key source of insight. He’s located in the bazaar, on the right side as you enter from the landing pad. His shop looks rundown, and he seems a bit odd compared to other vendors. You can ask him about the ship, though he’s pretty guarded. Using Engineering skills, you can get him to open up, or you can explore his personal room to find out more.

Otto’s room is hidden behind a wall hole near the start area, and to open the safe, you need the N-Ray Scanner from Golden Ridge. The puzzle involves activating power boxes in a specific order, linked by invisible lines unless you use the scanner. There are three power lines that must be carefully traced to unlock the safe, which contains valuable items like an Advanced Decryption Key and Otto’s journal—detailing the ship’s history.

Note: You can attempt the puzzle without the scanner, but it’s much harder to get right.

Returning to Stallworth

Once you gather all this info, go back and speak with Stallworth, who is waiting in the same spot as before. She reveals she’s been collecting this intel for the war effort against Auntie’s Choice. You can choose to betray her by killing her, object to her motives, or agree to her plans to increase your standing with the Order. That’s the end of the quest.