A location counter and an inventory are different checks
Does visiting 36 Supply Caches finish Quartermaster?
The official achievement requires every campaign Supply Cache item to be unlocked. The reported 36 counts cache locations; it does not establish a 36-item inventory or prove that every item is unlocked.[1][8]
- Pick up new weapons to add them to cache inventory.
- Access a cache to save inventory and loadout, refill ammunition and modify equipment.[9]
Carry two main weapons, a pistol and grenades. Saved configurations also apply to later drops of the same weapon.[9]
Act 2 locations · 11 cache stops
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| Done | Stop | Chapter / stage | Landmark |
|---|---|---|---|
| 1 | Hold the Line · opening | COG staging area: introduction. | |
| 2 | Part 1 | Subway exit: right-hand metal doors. | |
| 3 | Part 2 | Garage exit: canal stairs. | |
| 4 | Part 2 | Theater frontage. | |
| 5 | Part 2 | Major Burger, near loading dock. | |
| 6 | Part 2 | Police Department interior. | |
| 7 | Part 3 | Courthouse cutscene: drop left. | |
| 8 | Part 3 | Under train line: descend stairs. | |
| 9 | Part 3 | Kalona Hotel lobby. | |
| 10 | No Gear Left Behind | After golden-statue/scaffolding area. | |
| 11 | Overrun | Final hangar: left side. |
The subway’s metal doors open after dialogue. Repeated references to the same nearby cache are one stop in this checklist; revisiting a station is useful without creating a new location.[2]
Act 3 · four confirmed landmarks
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| Done | Stop | Chapter | Landmark |
|---|---|---|---|
| 1 | Stranded | Warehouse left of route. | |
| 2 | Enemy Lines | Upper subway station. | |
| 3 | Enemy Lines | Sewer · Hard Case 8. | |
| 4 | Last Foothold | Hospital side road, left buildings. |
These are cache locations explicitly identifiable in the illustrated route. Four is the size of this partial list, not a verified Act 3 total. Other map icons alone do not establish an approach or an inventory unlock.[1]
Act 4 · stations
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| Done | Stop | Chapter | Landmark |
|---|---|---|---|
| 1 | Hope and Ruin | Fort Vigil courtyard: ivy wall, beside the plaque. | |
| 2 | Technical Difficulties | Subway entrance · Vending machines · benches | |
| 3 | Tough as Nails | Power station · Foot of metal stairs |
Subway cache
Act 4.3 · Power station cache
Act 4.5 · Seradyne Admin cache
The video's chapter index places this stop in Paths Diverge. While helping Auntie reach Seradyne Admin, enter the glass doors beside the dark van. Pass the desks to the tall blue cabinet against the wooden wall; use it to open the Supply Cache menu.[7]
Your checks are saved in this browser. This checklist does not sync with the game.
| Done | Station | Location |
|---|---|---|
| 4 | Seradyne Admin · Blue cabinet beyond the desks |
Act 5 · stations
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| Done | Chapter | Landmark |
|---|---|---|
| Resolute | Interior lift room | |
| The Fall of Kalona | Bridge colonnade |
Act 5 · two recorded caches
Both stations enter the Supply Cache menu; these are locations, not inventory unlocks.[6]
Refit between encounters
The official campaign preview confirms cache functions: refill ammunition, switch the loadout and equip weapon mods. This makes a cache a practical stopping point after unlocking a mod or before the next main objective.[11]
| System | Relevant check |
|---|---|
| Campaign Supply Cache | Quartermaster: all campaign items unlocked. |
| Campaign Hard Cases / side missions | Unlock campaign modifications and slots. |
| Horde Siege Supply Cache | Separate mode; Energy-spending achievement. |
| Horde Siege weapon mods | Separate This Is My Rifle achievement. |
What remains to complete a full cache guide
The 21 locations above account for part of the reported 36 campaign caches. The remaining 15 locations and the complete item-unlock inventory are outside this checklist. Later-act routes are partial; the location total should not be used as an item-unlock checklist.[1][8][10]
For the upgrade containers feeding your cache, use Hard Case locations; for task rewards, use campaign side missions.
Sources & further reading
- First-hand campaign report: four separate completion totalsVGC · Chris Scullion · October 1, 2026
- Act 2 gameplay screenshot routes, including Supply Cache locationsPatch Crazy · Harry Smith · October 2, 2026
- Firsthand Act 3 collectibles, Hard Cases and secondary objectivesGamer Social Club · Adam “Addy” Stewart · October 2, 2026
- Act 4 campaign walkthrough: independently recorded PC gameplayGOWSeriesVideos · October 1, 2026
- Complete E-Day campaign: original PC gameplay recordingHegsbroGaming · 2026-10-02
- Act 5 recorded case and cachesEMK KrAuSeR · 2026-10-02
- E-Day full campaign: original Xbox Series X gameplaySkycaptin5 · 2026-10-02
- E-Day official achievements list (campaign hints)Xbox Wire · September 9, 2026
- Campaign loadout observations and in-game Supply Cache / Weapon Mods tutorial screenshotsQualbert · Mach Speed · October 1, 2026
- First-hand route creator's published Act 2 totals and later-act work statusPatch Crazy / u/Harshclif · October 2, 2026
- E-Day campaign hands-onXbox Wire · August 25, 2026