The Sinking City 2 mermaid: Hotel Walkthrough Guide

The The Sinking City 2 mermaid investigation takes place primarily inside the Devil’s Reef Hotel. The mermaid imagery is connected to Lorelei, her themed chests, the triangular lock in the basement, and the reward sequence that leads to the stage.

The hotel is easier to navigate when treated as a vertical route rather than a collection of isolated rooms. Start at reception, sweep the upper floors, obtain the Staff Key, collect the three Lorelei Tokens, and only then commit to the basement and stage sections.

Video Highlights:

• Devil’s Reef Hotel exploration and the Lorelei rescue route.
• Staff Key discovery through the Floor 2 hole.
• Lorelei chest and triangular key progression.
• Safe code clue combination and weapon attachments.
• Basement ventilation and stage survival sequence.

The first major objective is opening the route through the hotel. Several rooms contain documents that become important later, while the Staff Key is obtained only after reaching Floor 3 and returning to Floor 2.

Move methodically through the rooms instead of jumping into every opening immediately. The hole in Room 202 is part of the intended progression, but it should be used after the key event has been triggered above.

The hotel contains three Lorelei chests, each marked by the same mermaid theme. Every chest requires a Lorelei Token and provides one triangular key for the basement lock.

The first chest is more dangerous than the others because opening it activates harmful speakers. Destroy the speakers quickly, including the one in the bathroom, before collecting the key.

To find the Tokens, use the Staff Key on the Staff Room door on Floor 2. The red tray contains the Tokens, and the bed holds the Lorelei Chests clue. Connect that clue with the Hotel Ledger and Lorelei Lock clues in the Investigation menu to complete the evidence group.

The triangular keys are not ordinary room keys. They are pieces required for the mermaid-shaped basement lock. Once all three are collected, return to the gate below the hotel and insert them into the lock in any order.

The locked safe in Room 301 contains Voss’s Target Grip, a useful handgun attachment, along with ammunition. The combination comes from two hotel clues: the Safe Code Letter in Room 303 and the “Baby, One More Tide” lyrics near reception.

The lyrics provide the numerical references. The Safe Code Letter confirms that the clues should be read together. Enter 2137 at the Room 301 safe.

Before opening the basement gate, organize your inventory and craft ammunition where possible. The lower hotel contains chemicals, gunpowder, healing items, shotgun ammunition, and other materials. A storage area near the basement route can also help you prepare before the stage encounter.

The basement introduces explosive fungus and poison gas. Keep to the safer side of corridors, shoot dangerous growths before approaching, and avoid spending all your ammunition on minor enemies. The Minuteman is powerful, but its ammunition can disappear quickly during prolonged combat.

After opening the mermaid lock, follow the basement corridor while avoiding explosive growths. A ventilation schematic appears near the ventilation device, and the Minuteman is located inside the ventilation room beside the machine.

The ventilation puzzle requires every indicator to reach its green zone. Use the colored lever controls to raise or lower the indicators, then check the buttons that affect more than one level. Adjust the system gradually rather than making random changes, because one control can alter multiple readings.

Once the gas is cleared, return through the corridor and enter the previously blocked room. Ride the lift to the stage, then pull the lever on the left side to begin the survival encounter.

Yellow supply boxes can provide additional ammunition and healing during the encounter. Keep moving around the arena and identify the red-lit levers as soon as they appear. The objective is not simply to defeat enemies; Lorelei must continue moving through the stage sequence.

After the survival section, exit through the far-left theater door and return to the boat. Pull the lever with the bow to lower Lorelei into the vessel, then sail back toward the Annex library. The following ritual transitions the story toward the hospital investigation.

The mermaid-themed hotel route rewards careful exploration with a handgun attachment, a submachine gun, ammunition, investigation clues, and access to the next story segment. The most important progression items are the three triangular keys and the Staff Key.

Once Lorelei is brought to the library, the ritual scene changes the direction of the investigation. The story then moves toward the hospital, where the next objective involves tracking Lorelei’s body and exploring a new section of the flooded city.

For an additional room-by-room reference, use the The Sinking City 2 Part 6 Hotel Walkthrough Guide alongside this route. It is especially useful when checking document locations, chest positions, the safe code, and the ventilation sequence.