The Sinking City 2 Walkthrough: Complete Guide to Surviving Arkham's Flood

Complete The Sinking City 2 walkthrough covering combat, puzzles, collectibles, safe rooms, and story progression through flooded Arkham.

2026-08-19

Why This Walkthrough Matters

The Sinking City 2 throws players into a flooded, Lovecraftian Arkham where every street is submerged, every shadow hides something grotesque, and survival depends on resourcefulness as much as aim. If you're searching for a reliable The Sinking City 2 walkthrough, you've come to the right place. This guide covers the opening hours of the game—from leaving your safehouse to reaching the Library Annex—while offering combat strategies, puzzle solutions, and collectible locations that community reports confirm are essential for a smooth playthrough.

Unlike the first game, the sequel shifts toward combat-centered horror survival while preserving investigative elements. That means you'll need to balance gunplay with clue-connecting, all while managing limited ammo and health items. Let's dive into everything you need to know.

Getting Started: Story Setup and Essential Mechanics

The Premise

You play as Kelvin Rafferty, a man desperate to revive his beloved Fay from a coma induced by events tied to the Dreamlands. Kelvin has already acquired the Autocandor—the blade of Ulthar—and now needs a book called Recitations of the Tenebrous Soul from the university's Library Annex. This book contains a ritual known as "The Call," which supposedly returns a spirit to its body.

Arkham itself is under mandatory evacuation orders. The water rises daily, and the city burns in places. Despite the danger, Kelvin refuses to leave without saving Fay first.

Core Mechanics at a Glance

MechanicDescriptionWhy It Matters
Safe RoomsDesignated areas with conch record players for savingEnemies cannot enter; use them to stash loot and unlock Talents
Investigation TabConnect notes and clues to solve area mysteriesRewards extra loot, Talent points, and Achievements
Talents SystemSkill point tree powered by Dream EssenceUpgrades reload speed, damage reduction, and more
CraftingCombine gunpowder, chemicals, and herbsCreates ammo and healing items from raw materials
Boat TravelPrimary navigation through flooded streetsSome areas only accessible via water routes

Controls Reference (Keyboard & Mouse)

ActionKey
Interact / Pick Up / Move Puzzle ItemsE
SprintShift
DodgeSpacebar
AimM2
ShootM1
ReloadR

Player experience indicates that dodging is absolutely critical in combat encounters. The game warns you when enemies are about to strike, so learning to read those cues early will save your health bar.

Part 1: Reaching the Library Annex

Leaving the Safehouse

After the opening cinematic, you'll wake up next to Fay. Grab the Nightshade and the Autocandor dagger—do not lose this dagger, as it's essential for the resurrection ritual. Your home has been burning for three months, but your gear remains intact.

Before departing, check your stash. You'll find ammo, healing herbs, and painkillers. Community reports suggest taking only what you need immediately, since inventory space is limited and you'll want room for items you find in the field.

Once outside, you'll board a small boat. The city broadcasts evacuation warnings, but Kelvin ignores them. Your objective is straightforward: reach the Library Annex, retrieve the book, and return.

Key points along the route:

  • Slither worms are everywhere. These bell worms arrived with the flood and infest both the environment and the dead.
  • A gate blocks your path early on. You'll need to disembark and find a way to open it manually.
  • Look for safe room symbols on walls—these mark locations where you can save, stash items, and craft.

First Safe Room and Combat Encounter

Your first safe room contains ammo, healing herbs, painkillers, and a conch record player for saving. Player experience strongly recommends saving here, as your first combat encounter follows shortly after.

The undead enemies you'll face are former humans now puppeted by slither worms. They take multiple shots to bring down and can get back up after appearing dead. Tips for early combat:

  • Aim for center mass to conserve ammo
  • Watch for the "play dead" trick—approach corpses cautiously
  • Use environmental explosives when available
  • Dodge backward when enemies lunge; the game provides warning cues

The Electrical Panel Puzzle

To progress past the first major obstacle, you'll need to solve a fuse puzzle at an electrical panel. The solution involves rotating fuse pieces to complete a circuit:

  1. Pick up the fuse from the nearby area
  2. Rotate pieces to fit the panel layout
  3. Place the straight fuse in the correct slot
  4. Validate the configuration

Once solved, the gate opens and your boat can proceed further toward the Annex.

Part 2: Inside the Library Annex

Meeting Miss Bennett

Upon arriving at the Library Annex, you'll encounter Miss Bennett (Fay), who is also searching the restricted section. This dialogue scene reveals she's reading from the Necrotic Manuscripts. The conversation is mostly narrative, but it establishes that you're not alone in seeking forbidden knowledge.

Exploring the Annex

The Annex is a multi-floor area filled with enemies, puzzles, and collectibles. Here's what to look for:

Item TypeLocation NotesUse
Metal ScrapVarious shelves and drawersCrafting component (used later)
GunpowderBasement and upper floorsAmmo crafting
ChemicalsSide rooms and locked areasCrafting component
Emergency Relief CrateRequires ERC key (pen-like object)Inventory or weapon upgrades
MapGround floorReveals restricted section location

The ERC Key and Emergency Relief Crates

The Emergency Relief Crate (ERC) key is described as a small pen-like object that unlocks high-security white and gold chests. These crates typically contain upgrades to inventory slots or weapon modifications. Player experience suggests prioritizing these crates, as expanded inventory space dramatically improves quality of life.

Finding the Book

The restricted section is upstairs. To reach it, you'll need to:

  1. Find and insert the correct fuse in the electrical panel
  2. Navigate past multiple undead enemies
  3. Solve a gate mechanism (may require boosting or finding an alternate route)
  4. Locate the book in the restricted reading area

Once you have the book, a new character emerges: Gahonta, a man who has willingly introduced slither worms into his own body. He claims this has "lifted the veil," allowing him to read alien and arcane languages. He offers to translate the resurrection ritual—but demands a price.

Gahonta's Request

Gahonta asks you to travel to the Devil's Reef Hotel and retrieve someone named Lorelei, the guest of honor from a recent gala. He provides his boat and tells you to listen for a siren. This sets up the next major story objective.

Part 3: The Church Area and Investigation Puzzles

Star Key Puzzle

Before reaching the Devil's Reef Hotel, you'll encounter a church area with a complex investigation puzzle. Here's the breakdown:

Clues to collect:

  • A printing plate with symbols
  • Documents mentioning the church's construction date
  • A pin clue stating "three times the stars"
  • Bell installation records

The solution path:

StepActionResult
1Collect all documents in the church areaUnlocks Investigation tab connections
2Connect clues in the Investigation menuReveals the church was built in 1667
3Use the date on the lock mechanismOpens the locked area
4Insert the star-shaped artifactActivates the next sequence

The Ritual Sequence

After solving the church puzzle, you'll trigger a surreal sequence involving a mystical artifact with three dull tips. This leads to an optional boss encounter where an entity uses Fay's voice to lure Kelvin. Player experience indicates this fight rewards Dream Essence upon completion, which feeds into the Talents system.

Talents System Explained

Dream Essence points can be spent on various upgrades. Available talents include:

TalentEffectRecommendation
Reload WeaponNoticeably faster reloadsHigh priority for combat-heavy sections
Humanoid Damage ReductionTake less harm from humanoid enemiesUseful for early-game survivability
Flashlight StrikeDeal more damage with flashlight offsituational; requires comfort with darkness
Weapon SwapFaster weapon switchingOnly useful once you have multiple weapons

You start with one Talent slot. Additional slots unlock at 10 Dream Essence points, so prioritize your most-needed upgrade first.

Collectibles Guide

Emergency Relief Crates

These white and gold chests are scattered throughout each area. They require ERC keys to open and typically contain inventory expansions or weapon upgrades. Finding all of them in a single playthrough earns an Achievement.

Mushroom Jack Broadcasts

Box radios throughout the city play recorded messages from "Mushroom Jack," the host of the only dry station in Arkham. These broadcasts tell lore-connected stories—some haunting, some darkly humorous. Collecting all broadcasts also ties to an Achievement.

General Tips for Collectible Hunting

  • Search every room thoroughly, including areas that seem empty
  • Return to previously visited areas after acquiring new keys or tools
  • Keep multiple save files in case you miss something
  • Check rooftops and basement areas—collectibles are often tucked away in hard-to-reach spots

Combat Survival Strategies

Based on player experience and community reports, here are the most effective combat strategies for The Sinking City 2:

  • Conserve ammo aggressively. Enemies drop ammo, but you'll often burn through what you find immediately. Prioritize headshots when possible.
  • Use environmental hazards. Explosive barrels and traps can eliminate enemies without spending bullets.
  • Dodge is your best friend. The dodge mechanic has generous i-frames and provides clear warnings before enemy attacks land.
  • Combat is optional in some areas. If you're low on health or ammo, sometimes the best strategy is simply running to your objective.
  • Craft strategically. Don't craft items until you need them—raw materials take up less inventory space than finished products in some cases.
  • Stash excess materials. Safe room stashes allow you to store items you don't need immediately, freeing up inventory for essentials.

FAQ

Is The Sinking City 2 walkthrough necessary for first-time players?

While the game is completable without a guide, a The Sinking City 2 walkthrough significantly reduces frustration—especially for the investigation puzzles, which require connecting specific clues in the right order. The game doesn't always clearly signal which documents are relevant, so having a reference helps avoid backtracking.

Do I need to play the first Sinking City to understand the sequel?

No. The sequel introduces a new protagonist and provides enough context through dialogue and environmental storytelling to follow the plot. However, returning players will appreciate deeper references to the Dreamlands and the events that put Fay in a coma. The official Frogwares website offers additional lore for those interested in the broader narrative.

How does saving work in The Sinking City 2?

The game features both autosave checkpoints and manual saving at safe rooms using conch record players. Between checkpoints, progress is lost unless you manually save. Community reports strongly recommend saving at every safe room encounter, as death can send you back further than expected—especially during multi-stage puzzle sequences.