The Sinking City 2 has 23 achievements totaling 1,000 Gamerscore per TrueAchievements. Five are unmissable story achievements; four are technically missable weapon pickups (Shotgun, SMG, Rifle, Grenade Launcher); eight are missable optional investigations (The Inheritance, The Other Gods, The Red Press, The Siren's Call, The Whisperers, The Vault, The Drowned, The Damned); two are single-playthrough collectibles (Mycophile for Mushroom Jack broadcasts and Behind Every Crate Man for Emergency Relief Crates); one (From Oblivion Read) is NG+ only; and one (What Dreams Are Made Of) needs the second playthrough to unlock the final four Eldritch Reward Talents. The platinum (`For Her`, 90G) unlocks automatically when the second-to-last achievement triggers. Cross-link puzzle codes to the [/walkthrough](/walkthrough) chapter table.
Unmissable Story Achievements (5)
These trigger on story progression and cannot be missed in a single normal playthrough. | Achievement | Description | GS | Missable? | |---|---|---|---| | Welcome to Arkham | Reach Miskatonic University | 25 | No (story) | | Soulmates | Perform the ritual | 25 | No (story) | | Body Snatchers | Discharge yourself from Akeley Memorial | 40 | No (story) | | Bigger Fish to Fry | Survive the Arkham Fish Market | 40 | No (story) | | Timeless Dawn | Awaken / Defeat Slither Prime | 50 | No (story) |
Technically Missable Weapon Pickups (4)
Every named weapon is in a fixed location but requires you to be in the right chapter with the right prep, so each pickup is technically missable if you skip the chapter or rush past the room. The Shotgun is the first gated pickup; the Grenade Launcher at the Fish Market weighing station is the most commonly missed because it requires the second Leyden Jar pickup to be in hand before the door unlocks. | Achievement | Description | GS | Missable? | |---|---|---|---| | Out of Your Shell | Obtain the Shotgun | 40 | Yes (single playthrough) | | Fast Friends | Obtain the Submachine Gun (Devil's Reef Hotel basement, next to the gas switch) | 40 | Yes (single playthrough) | | We Aim to Please | Obtain the Rifle (Hospital Prosthetics Workshop) | 40 | Yes (single playthrough) | | A Blast From the Past | Obtain the Grenade Launcher (Fish Market weighing station after the second Leyden Jar) | 40 | Yes (single playthrough, most-missed weapon) |
Missable Optional Investigations (8)
These eight trophies gate on the optional Investigation side content that the no-chapter-replay constraint makes load-bearing. If you skip the investigation you cannot recover the trophy without starting a New Game+. | Achievement | Description | GS | Missable? | |---|---|---|---| | The Inheritance | Investigate the wall safe (Apartment 5, Devil's Reef) - code `1908` | 40 | Yes | | The Other Gods | Investigate the church mystery - charge the monolith | 40 | Yes | | The Red Press | Investigate the cursed press (Printing Plates A/B/C, Gold or Silver) | 40 | Yes | | The Siren's Call | Investigate the alluring song (Devil's Reef Hotel Room 301 safe, code `2137`) | 40 | Yes | | The Whisperers | Investigate the brains machine (Wireless Room brain frequencies `13 -> 05 -> 36`) | 40 | Yes | | The Vault | Investigate the locked storage (morgue `-1F`, code `1308`, requires Anti-Rust Acid) | 40 | Yes | | The Drowned | Investigate the mysterious locker (buoy press order `Lighthouse -> Ropes -> Starfish -> Octopus`, locker safe `1496`) | 40 | Yes | | The Damned | Investigate the sixteen punishments (press order `I -> IV -> IX -> XVI`, Memory Safe `6294`, Strange Statue `Kneeling Woman -> Octopus -> Sea Creature -> Time -> Jar`) | 40 | Yes |
Single-Playthrough Collectibles (3)
These three trophies must be cleared in one playthrough. Carry-over behaviour varies: keys and Crates persist as items, but the Mushroom Jack broadcasts do not, so the run that completes them must be the run you finish them in. | Achievement | Description | GS | Missable? | |---|---|---|---| | Sterilizer | Defeat three nightmares in the hospital (acid-nightmare sequence in Akeley Memorial) | 50 | Single playthrough (unmissable if killing everything) | | Mycophile | Listen to every Mushroom Jack broadcast in one playthrough (10 radios) | 50 | Single playthrough only | | Behind Every Crate Man… | Unlock every Emergency Relief Crate in one playthrough (13 keys; DLC excluded) | 50 | Single playthrough only |
New Game+ Required (2)
Two achievements cannot be unlocked on a single playthrough and require the post-launch New Game+ carry-over or the second run that unlocks the late-game Eldritch Reward talents. | Achievement | Description | GS | Missable? | |---|---|---|---| | From Oblivion Read | Read all the writings that weren't there before (8 purple-envelope writings, NG+ only) | 50 | NG+ only | | What Dreams Are Made Of | Obtain all Talents (4 late-game Talents unlock via Eldritch Rewards on the second playthrough) | 50 | Requires second playthrough |
Completion / Meta (1)
The platinum-equivalent achievement triggers automatically once the second-to-last achievement fires, so you do not need a separate step for it. | Achievement | Description | GS | Missable? | |---|---|---|---| | For Her | Unlock all achievements / trophies (platinum-equivalent) | 90 | Auto (no separate step) |
Which Achievements Require a Second Playthrough?
Twenty-one of the 23 achievements can be unlocked in a single normal playthrough if you do every optional investigation and every pickup. The two that cannot are: - **From Oblivion Read** (50G) - requires New Game+ because the eight purple-envelope writings only appear in NG+. - **What Dreams Are Made Of** (50G) - requires a second playthrough to unlock the final four Eldritch Reward Talents at the Safe Room Talent Tables. The platinum-equivalent **For Her** (90G) does not require its own step; it unlocks automatically when the second-to-last achievement fires. If you skip the eight investigations in your first run, you will instead need NG+ to recover those 8 trophies plus the 2 above for 10 total NG+ recoveries; the single-clean-run route is the faster 100% path. Per the Gamer Social Club 100% achievement guide, the recommended single-playthrough route is: 1. Chapter 1: do The Inheritance (Apartment 5 wall safe code `1908`, fuse box with Electrical Fuses from Radio Shop). 2. Chapter 2: do The Other Gods (Trident / Church Obelisk), The Red Press (Cursed Press), The Siren's Call (Room 301 `2137`). Weapon pickups: Shotgun (Chapter 2 / Out of Your Shell) and SMG (Devil's Reef Hotel basement / Fast Friends). 3. Chapter 3: do The Whisperers (Wireless Room `13 -> 05 -> 36`) and The Vault (Locked Storage `1308`). Weapon pickup: Rifle (Hospital Prosthetics Workshop / We Aim to Please). 4. Chapter 4: do The Drowned (Buoy + locker safe `1496`) and The Damned (Sixteen Punishments `I -> IV -> IX -> XVI` + Memory Safe `6294` + Strange Statue shoot order). Weapon pickup: Grenade Launcher (weighing station after second Leyden Jar / A Blast From the Past). 5. Single-playthrough collectibles: every Mushroom Jack broadcast, every Emergency Relief Crate key, three acid-nightmare kills in the hospital (Sterilizer). 6. New Game+: From Oblivion Read (purple-envelope writings) and What Dreams Are Made Of (final four Eldritch Reward Talents). The order assumes you want to clear the investigations on the first pass to avoid the NG+ recovery loop.
Sources
[TrueAchievements - The Sinking City 2](https://www.trueachievements.com/game/The-Sinking-City-2/achievements) - `wiki/reference` - checked `2026-08-27` - 23-achievement total at launch and the live source-of-truth list. [Gamer Social Club - The Sinking City 2 100% Achievement Guide](https://gamersocialclub.ca/2026/08/18/the-sinking-city-2-100-achievement-guide) - `media/interview` - checked `2026-08-27` - The 18-missable-flag breakdown, single-playthrough route, and NG+ recovery split. [GamerBlurb - The Sinking City 2 Achievements Guide](https://gamerblurb.com/articles/the-sinking-city-2-achievements-guide) - `media/interview` - checked `2026-08-27` - Cross-referenced missable flag list for weapon pickups and the eight investigations. [TreyexGaming - The Sinking City 2 Puzzle Solutions Guide](https://www.treyexgaming.com/the-sinking-city-2-puzzle-solutions-guide) - `media/interview` - checked `2026-08-27` - Per-chapter puzzle codes (`1908`, `2137`, `1308`, `13->05->36`, `Lighthouse -> Ropes -> Starfish -> Octopus`, `I -> IV -> IX -> XVI`, `6294`, `1496`) used to confirm the investigation trophy unlock conditions. [Xbox Achievements - The Sinking City 2](https://www.xboxachievements.com/game/the-sinking-city-2/achievements) - `wiki/reference` - checked `2026-08-27` - Xbox-specific achievement list and the cross-platform total. [PSNProfiles - The Sinking City 2](https://psnprofiles.com/) - `wiki/reference` - checked `2026-08-27` - PlayStation trophy breakdown cross-reference (2 bronze / 13 silver / 7 gold / 1 platinum per community attribution). [The Sinking City 2 on Steam](https://store.steampowered.com/app/2825860/The_Sinking_City_2/) - `official/store` - checked `2026-08-27` - Steam achievement list and in-game Steam overlay reference. [Frogwares YouTube channel](https://www.youtube.com/@Frogwares) - `official/store` - checked `2026-08-27` - New Game+ at-launch confirmation (per GamingTrend) and Eldritch Reward Talents framing.