The Sinking City 2 investigation stuff: Step-by-Step Tips - Features

The Sinking City 2 investigation stuff: Step-by-Step Tips

Learn how optional investigation works in The Sinking City 2, including clue analysis, puzzle rewards, difficulty settings, and survival-horror tips.

2026-08-18
The Sinking City 2 Wiki Team
Quick Guide
  • The Sinking City 2 investigation stuff is optional, but it can reveal secrets, lore, and useful gameplay advantages.
  • Investigate selectively when you have time to inspect clues without wasting scarce ammunition or healing supplies.
  • Use detective tools to connect evidence, uncover alternate paths, and understand Arkham’s supernatural threats.
  • Adjust investigation difficulty if puzzles slow the story while keeping combat difficulty unchanged.
  • Explore flooded areas carefully because environmental changes and hostile creatures can interrupt clue gathering.

The Sinking City 2 Investigation Stuff Explained

The Sinking City 2 investigation stuff centers on an optional detective system inside a much stronger survival-horror structure. Calvin Rafferty can explore the flooded streets of Arkham, fight eldritch creatures, and examine suspicious locations without investigation becoming a mandatory requirement for story progression. The system is designed for players who enjoy connecting clues and discovering hidden context, while action-focused players can continue through the main path with fewer investigative detours.

Investigation is therefore best understood as a flexible advantage rather than a separate campaign mode. Taking time to inspect a room, reconstruct an event, or solve an environmental puzzle may reveal secrets, alternate options, useful knowledge, and additional lore. The official Frogwares announcement describes investigation as a feature that can provide tangible gameplay benefits and new ways to progress.

Video Highlights:

  • The sequel shifts toward survival horror while retaining optional detective gameplay.
  • Resource conservation makes choosing when to investigate especially important.
  • Environmental puzzles and hidden paths can reward careful observation.
  • Accessibility settings include a separate investigation difficulty slider.

The major change from the original game is emphasis. The first The Sinking City was primarily a detective adventure with horror elements. The sequel places combat, exploration, scarce supplies, and a flooded environment at the center. Investigation remains recognizable as a Frogwares hallmark, but it is no longer positioned as the only way to understand every major objective.

Investigation featurePractical effectBest use
Optional clue workAdds secrets, lore, and alternate optionsCurious players and completionists
Environmental puzzlesRewards careful inspection of locationsHidden routes and side discoveries
Detective analysisImproves awareness of events and choicesUnclear or suspicious scenes
Investigation difficulty sliderReduces puzzle friction without changing combatStory-focused playthroughs

Clue Reading

Inspect objects, rooms, and unusual evidence before leaving a location.

Scene Reconstruction

Piece together what happened to gain context beyond the obvious objective.

Hidden Routes

Search for alternate options, concealed areas, and environmental solutions.

Gameplay Benefits

Extra knowledge can improve preparation and reveal more than direct combat.

Investigation Principle

Treat detective work as a risk-versus-reward decision. Search thoroughly when the area is controlled, but retreat when enemies or scarce resources make further inspection unsafe.

When to Investigate Flooded Arkham

Arkham is not a static backdrop. Rising floodwaters can change routes, submerge previously usable paths, and create new dangers during traversal. Some creatures can influence the environment or distort perception, making a seemingly quiet investigation site dangerous. Boat travel is also part of the unsettling atmosphere, so reaching a clue may require as much caution as interpreting it.

A reliable investigation routine begins with the environment, not the evidence. Before interacting with a clue, check entrances, exits, nearby cover, and the direction of likely threats. If a monster has already altered the space around you, completing the investigation may be less valuable than marking the location mentally and returning later with better supplies.

SituationInvestigation priorityRecommended response
Quiet interior roomHighSearch containers, evidence, and alternate routes
Flooded outdoor pathMediumCheck the route, then move before threats surround you
Active enemy nearbyLowCreate distance or eliminate the immediate danger first
Hallucination or sanity distortionMediumStabilize your position and avoid rushing conclusions
Low ammunition or healingSelectiveInvestigate only clues tied to progress or clear benefits

Use the following sequence whenever you enter a suspicious location:

1

Secure the Approach

Identify nearby threats, escape routes, and environmental hazards before examining anything. Do not begin a long clue sequence with an exposed exit or an unstable flooded path behind you.

2

Read the Room

Look for visual anomalies, damaged objects, unusual blood trails, occult symbols, and items that appear deliberately placed. The safest clues are often found by observing the entire scene first.

3

Inspect in Layers

Start with obvious evidence, then revisit the space for secondary details. Optional investigation rewards patience, so avoid leaving immediately after finding the first interactable object.

4

Connect the Evidence

Compare clues and determine how they relate to the event, location, or suspect. If the conclusion is unclear, continue searching rather than spending ammunition to force progress.

5

Choose the Safe Exit

Leave through the route that preserves supplies and positioning. If the area becomes hostile, retreating and returning better prepared is a valid survival-horror strategy.

Floodwater Hazard

Do not assume a familiar route remains safe. Flooding, altered paths, and creature abilities can change the space around an investigation site.

Step-by-Step Clue Strategy

The strongest approach to investigation combines observation with resource management. Every bullet, healing item, and crafting material has increased value in a survival-horror game, so there is little reason to fight every creature encountered. A clue route should reduce uncertainty without creating unnecessary combat.

Begin by separating clues into three practical categories: progression evidence, optional discovery evidence, and atmospheric evidence. Progression evidence helps you understand what to do next. Optional evidence may expose secrets, alternate options, or extra lore. Atmospheric evidence deepens the story but may not provide an immediate mechanical reward. All three matter, but they should not receive the same priority during a dangerous encounter.

Clue categoryMain valuePriority during danger
Progression evidenceClarifies objectives and possible routesHigh
Optional discovery evidenceReveals secrets, alternate options, or bonusesMedium to high
Lore evidenceExpands the Lovecraftian story and settingMedium
Environmental signalWarns of a trap, flood change, or nearby threatHigh
Repeated clueConfirms information already understoodLow

Follow this decision model:

  1. Observe before interacting. A quick scan can reveal whether a clue is isolated or part of a larger sequence.
  2. Record the location mentally. If a room becomes unsafe, retreating does not mean the investigation has failed.
  3. Use the least costly solution. Avoid spending combat resources when repositioning or returning later is possible.
  4. Recheck altered spaces. Floodwater and supernatural effects may change how a location can be approached.
  5. Prioritize tangible benefits. Secrets, lore, alternate options, and useful discoveries are stronger reasons to investigate than curiosity alone.

The sequel’s investigation system is not built around forcing every player to solve every puzzle. It supports a deliberate playstyle for fans who want more context and rewards careful attention. Players who prefer a faster survival-horror pace can use the investigation settings to reduce friction while preserving the broader story experience.

Best General Method

Investigate safe rooms completely, inspect dangerous areas selectively, and return later when better ammunition, healing, or upgraded gear makes the risk worthwhile.

Combat, Sanity, and Investigation Safety

Investigation becomes harder when Arkham’s monsters attack perception as well as health. Some creatures can drain sanity and produce hallucinations, phantom figures, or misleading sounds such as footsteps. These effects can make it difficult to determine whether a sound is a clue, an enemy, or a supernatural distortion.

The safest response is to avoid treating every strange signal as an immediate objective. First stabilize your position. Move toward a defensible area, check your surroundings, and avoid committing to a narrow route while perception is unreliable. If a creature is influencing floodwater or changing the environment, your original escape plan may no longer be available.

ThreatInvestigation problemSafer tactic
Scarce ammunitionFighting every enemy drains future optionsRetreat when combat is avoidable
Limited healingMistakes reduce survival marginSecure the room before searching
Sanity drainHallucinations obscure threats and cluesReposition and reassess the scene
Flood manipulationRoutes may become submergedKeep an alternate exit in mind
Unpredictable boss behaviorLarge encounters reshape the arenaWatch surroundings, not only the target

A good loadout for investigative exploration should support flexibility rather than maximum damage. Carry enough ammunition for unavoidable encounters, preserve healing for emergency recovery, and leave room for crafting resources or newly discovered items. The goal is not to clear every corridor. The goal is to retain enough options to solve the next problem.

The optional Holloway Manor side investigation also demonstrates how detective content can connect with the wider campaign. This standalone bonus case offers roughly two hours of additional gameplay in a decaying mansion and rewards completion with the Bucking Bronco revolver for the main story. It is separate from the central investigation route, but it shows the value of optional mysteries when they provide both narrative and practical rewards.

Sanity Reminder

When audio cues, movement, or visual details feel unreliable, pause the investigation and secure your position. Confusion is a hazard to manage, not a signal to rush forward.

Settings, Progression, and Investigation Goals

The Sinking City 2 offers four difficulty settings, ranging from a more approachable story-focused option to the demanding Survivor setting. Separate accessibility controls cover subtitles, audio settings, audio cue support, motion controls, rapid button presses, HUD options, and investigation difficulty. This separation is valuable because players can preserve challenging combat while making clue analysis more comfortable.

For a first playthrough, choose settings based on the experience you want rather than assuming the hardest option is the best way to enjoy detective content. A lower investigation difficulty can keep the story moving if puzzle interpretation becomes a barrier. Conversely, players who enjoy reconstructing scenes and searching for hidden meaning can keep the investigation challenge higher while adjusting audio or motion features for comfort.

Player preferenceSuggested setupReason
Story-first explorerLower investigation difficulty, moderate combatKeeps clue progression accessible
Survival-horror veteranHigher combat difficulty, standard investigationPreserves pressure in both systems
Lore-focused detectiveModerate combat, higher investigationEmphasizes careful scene analysis
Accessibility-focused playerCustom subtitles, audio cues, HUD optionsReduces disorientation and input strain

Use this checklist to organize an investigation-heavy run:

Investigation Goals:

  • Inspect safe rooms before moving to the next objective
  • Separate progression clues from optional lore evidence
  • Keep an escape route open near flooded locations
  • Return later when resources are too low for a risky search
  • Adjust investigation difficulty if puzzle friction interrupts the story

First Run

Focus on safe exploration, core clues, and conserving ammunition for unavoidable encounters.

Lore Run

Revisit optional areas, inspect environmental details, and follow hidden paths whenever conditions allow.

Challenge Run

Raise combat and investigation difficulty, limit retreats, and rely on careful preparation.

The best long-term strategy is to let investigation support survival rather than compete with it. Optional detective work can explain why a location changed, reveal a safer option, or expose a secret that would otherwise remain hidden. However, the system is most effective when you choose your moments. A patient retreat can preserve more progress than a reckless attempt to inspect one final clue.

Recommended Playstyle

For most players, use normal investigation settings, explore secure interiors thoroughly, and customize combat or accessibility independently to match your preferred level of tension.

Q: Is investigation mandatory in The Sinking City 2?

No. The sequel keeps investigation optional. You can investigate to discover secrets, lore, alternate options, and useful benefits, but the system is not intended to block every player from progressing.

Q: What kind of rewards can investigation provide?

Optional investigation can uncover secrets, environmental solutions, alternate progression options, and additional lore. Some side investigations can also provide practical campaign rewards, such as the Bucking Bronco revolver from Holloway Manor.

Q: Should I investigate while enemies are nearby?

Usually not. Secure the area, create distance, or retreat first. Ammunition and healing are limited, and supernatural enemies can distort perception or change the surrounding environment.

Q: Can I make investigation puzzles easier?

Yes. The game includes a separate investigation difficulty slider, allowing you to reduce puzzle difficulty while keeping combat challenging. Other accessibility options cover subtitles, audio cues, HUD controls, motion controls, and rapid button presses.