The Sinking City 2 has 23 achievements, worth 1,000 Gamerscore on Xbox, and the road to all of them is a two-run plan. Run one collects 21: all five story achievements, all eight investigation achievements, both single-run collections, all four weapons, all Talents, and the hospital cleanup. Run two is Ex Oblivione, whose new writings unlock From Oblivion, which in turn triggers For Her, the all-achievements achievement. The trap is chapter locking: there is no chapter select, so a missed single-run collection or weapon cannot be picked up later in the same run.
Quick answer
Total: 23 achievements. Story 5, investigation 8, other 10.
Run one target: 21 achievements. Run two (Ex Oblivione) adds From Oblivion and For Her.
Strictly New Game Plus-only: From Oblivion alone. Everything else can be done in run one with care.
Single-run collections: Behind Every Crate Man and Mycophile must be completed inside one playthrough, or that run is void for them.
No chapter select exists. A missed weapon or investigation in a finished chapter means reloading an earlier save or starting a new run.
At a glance
Achievements: 23 total; 1,000 Gamerscore on Xbox
Story: 5 (unmissable on completion)
Investigation: 8 (chapter-locked)
Other: 10, including 2 single-run collections and From Oblivion (New Game Plus only)
Two-run plan: Run one 21, run two 2
Chapter numbering in this guide: TheGamer Part numbering. Other guides use different Chapter numbers for the same spots; do not mix the two.
1. The full list
Swipe horizontally to view all columns.
| Achievement | How to unlock (verified) | Missable note |
|---|---|---|
Welcome to Arkham! | Reach Miskatonic University. | Story; unmissable. |
Soulmates | Perform the ritual. | Story; unmissable. |
Bodysnatchers | Discharge yourself from Akeley Memorial. | Story; unmissable. |
Bigger Fish to Fry | Survive the Arkham Fish Market. | Story; unmissable. |
Timeless Dawn | Awaken; the finale story achievement. | Story; unmissable. |
The Inheritance | Investigate the wall safe in Apartment 5, Part 1 apartment area. | Chapter-locked; reload or new run if missed. |
The Other Gods | Investigate the church mystery in Part 3: place the correct weapon in the correct church position and defeat the summoned monster. | Chapter-locked. |
The Red Press | Investigate the cursed press in Part 5: place three plates in the press in the correct order. Silver face rewards Dream Essence; gold face rewards the Cutter’s Sturdy Stock shotgun stock. | Chapter-locked. |
The Siren’s Call | Investigate the alluring song; Part 6 hotel room 301 safe puzzle. | Chapter-locked. |
The Whisperers | Investigate the machine connected to the brains; Part 7-2 hospital. | Chapter-locked. |
The Vault | Investigate the locked storage before leaving the morgue; Part 7-3, using that area’s code. | Chapter-locked. |
The Damned | Investigate the sixteen punishments. Detailed steps were marked TBD by TheGamer and were not documented in checked sources. | Chapter-locked; steps unverified. |
The Drowned | Investigate the mysterious locker. Detailed steps were marked TBD by TheGamer and were not documented in checked sources. | Chapter-locked; steps unverified. |
Behind Every Crate Man… | Unlock every Emergency Relief Crate in one playthrough, excluding DLC. 13 crates and 13 activation pens in total. | Single-run: miss one and that run is void for it. |
Mycophile | Listen to every Mushroom Jack broadcast in one playthrough. 10 Tales of Arkham radios; you must interact and play each one. | Single-run: a finished chapter locks its radios permanently. |
What Dreams Are Made Of | Obtain all Talents, unlocked by tiers and costing large amounts of Dream Essence. The total Talent count was not verified. | Grind-heavy; total unverified. |
A Blast From the Past | Obtain the Grenade Launcher, Linguist’s Folly, reported at the Fish Market Weighing Station ground floor, Part 4. | Chapter-locked if missed. |
Fast Friends | Obtain the Submachine Gun, reported in the Part 6 hotel basement. | Chapter-locked if missed. |
Out of Your Shell | Obtain the Shotgun, reported after entering the bar through a safe room in Part 4. | Chapter-locked if missed. |
We Aim to Please | Obtain the Rifle, reported on a table in the room unlocked at the start of Part 7-2 after the Old Mask Face event. | Chapter-locked if missed. |
Sterilizer | Defeat three nightmares in the hospital, Part 7-3: one in the Upper Yard, one in the Maintenance Room, one in the Restricted Area after leaving the hospital. | Chapter-locked. |
From Oblivion | Read all the writings that were not there before, in Ex Oblivione New Game Plus. The total count and locations of the new writings were not verified. | New Game Plus only. |
For Her | Unlock all achievements. It triggers with the last regular achievement, most likely From Oblivione’s From Oblivion. | Last one. |
2. Run one: the 21-achievement checklist
Clear each chapter before moving on. Maps mark rooms looted or unlooted; do not leave a chapter with unopened crates or unplayed radios behind.
Open all 13 Emergency Relief Crates with their 13 pens, and play all 10 Mushroom Jack radios, inside this run.
Pick up all four weapons as you pass their spots: shotgun in Part 4, grenade launcher at the Fish Market, submachine gun in the Part 6 hotel basement, rifle in Part 7-2.
Spend Dream Essence on Talents steadily. The all-Talents achievement needs large amounts, so do not leave Essence unspent.
Keep multiple manual saves. Neoseeker’s advice for this game is that most achievements can be done in one run, and a missed item can be recovered by reloading an earlier save.
3. Run two: Ex Oblivione only
After completion, start Ex Oblivione, the New Game Plus mode. Inventory slot upgrades and weapon upgrades carry in, under the 1.1.0 rules, and duplicates found in the second run convert to Dream Essence. The only required task is collecting the new Oblivion Writings that appear in this mode; collecting the last one triggers From Oblivion, and For Her follows as the all-achievements achievement. Pure New Game is a fully fresh run and must not be confused with Ex Oblivione: the new writings appear only in Ex Oblivione. Whether crate and radio progress carries across runs has not been stated by the developer, so do not assume a second run inherits run one’s collections; if run one missed a single-run collection, plan to complete that full set inside the second run.
4. What is not verified
The Damned and The Drowned detailed solutions: TheGamer marks both TBD.
Oblivion Writings total count and locations.
Total Talent count and whether one run’s Dream Essence suffices for all Talents.
Whether crate and radio progress carries across runs.
Unified chapter numbering: this guide uses TheGamer Part numbers only.
FAQ
Can I get all 23 in one run?
No. From Oblivion requires Ex Oblivione New Game Plus, so at least two runs are needed. Run one can collect the other 21 with care.
What happens if I miss a crate or a radio?
Finished chapters do not reopen, and the two collections must be completed inside one playthrough. Reload an earlier manual save if you have one; otherwise that run is void for the missed collection, and you complete the full set inside a later run.
Do collections carry into New Game Plus?
Unverified. The developer has stated that inventory slot and weapon upgrades carry into Ex Oblivione, but has not stated whether crate or radio counts carry. Do not assume they do.