Act 4 Collectible Locations

Find all 41 Act 4 collectibles in six chapter checklists. Stop at the train platform before it leaves, complete Tough as Nails’ optional factory routes, and search Critical Failure’s final rooms before the boss encounter.

Updated Oct 3, 2026

Act total: 41 collectibles[1]
Chapter counts: 13 · 2 · 14 · 5 · 2 · 5[2]
Largest chapter: Tough as Nails · 14[1]
Opening pickup: Hank Rustin tags are automatic[2]

Pause before boarding or finishing an objective

Useful Act 4 stopping points[1][2]

PLATFORM
Technical Difficulties
Search for both items before the train leaves.
SIDE ROUTES
Tough as Nails
Optional objectives lead to additional pickups.
FINAL ROOM
Critical Failure
Check the research journal before the boss.

Location names below spoil later districts and encounters. Compare the six chapter counts first, then use the shortest matching landmark; these are item checklists rather than a full story walkthrough.

Chapter 1 — Hope and Ruin · 13 collectibles

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Memorial, hotel and city streets[2]
Done	Item	Landmark
	COG Tags — Sergeant Major Hank Rustin	Automatic at chapter start.
	Message from The Coalition	Opening memorial.
	COG Tags — Sergeant Betsy	Left after bridge.
	Regalia Hotel VIP Guest List	Hotel reception.
	DISPUTE Magazine	Behind truck, after cathedral.
	Anniversary Card and Tickets	Sniper building.
	A Handwritten Letter, in Vasgari	Market’s rear-left area.
	COG Tags — Specialist Harrison Alexieff	University approach.
	Statuette of Roman Kalona	Gift shop before square.
	COG Tags — Specialist Dale Maddoc	University optional path.
	Blood-Splattered Ulk Plushie	Opera House approach.
	Light Darker Opera Program	Opera House balcony.
	COG Tags — Specialist Mei Aoi	Opera House’s left street end.

Chapter 2 — Technical Difficulties · 2 collectibles

The Nerd Stash gameplay screenshot labeling Aman Landry’s COG Tags on the train platform — Credit: The Nerd Stash. Aman Landry’s tags are at the train stop; check this area before continuing the journey.[2]

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Train-stop check[1]
Done	Item	Landmark
	COG Tags — Sergeant Aman Landry	First train stop.
	No. 80 Graffitied Poster	Back along tracks: tunnel wall.

Find both before allowing the train to continue. A two-item chapter is a good place to resolve a missing count immediately.

Chapter 3 — Tough as Nails · 14 collectibles

The Nerd Stash gameplay screenshot labeling the Imulsion Blast Charge in a warehouse — Credit: The Nerd Stash. The Imulsion Blast Charge is on an optional Tough as Nails route, inside the warehouse area shown here.[2]

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Streets, trainyard and refinery[1]
Done	Item	Landmark
	Young Artists Night Poster	First left street.
	Maranday Apple Brandy Bottle	Northern street.
	COG Tags — Corporal Goran Ducaine	Northern warehouse.
	A Letter Regarding Armadillos	Civilian-defense building: desk.
	COG Tags — Lance Corporal Calder Hunt	Building near trainyard.
	R.I.G. Component	Empty train car.
	Imulsion Blast Charge	Northeastern secondary objective.
	Refiner’s Union Jacket	Nearby building: upper floor.
	COG Tags — Lieutenant Jacob Palma	Refinery interior.
	Severed JACK Bot Head	Central factory.
	Blurry Photo of Locust Attack	Factory side room.
	COG Tags — Lance Corporal Dalia Avdol	Beyond broken factory bridge.
	Seradyne Factory Closure Sign	Final side-objective factory: lower floor.
	Port of Kalona Docking Registry	Main-objective tower: console.

Chapter 4 — Signals · 5 collectibles

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Gas station and communications tower[2]
Done	Item	Landmark
	Infinity Mints	Gas station.
	Signed Kalona Eagles Cap	Under tower-approach bridge.
	Photo of Lucas and His Friends	Communications tower interior.
	Lucas’ Handheld Radio	Same tower interior.
	Pair of Binoculars	Bridge after tower.

Chapter 5 — Paths Diverge · 2 collectibles

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Reactor approach[1]
Done	Item	Landmark
	COG Tags — Lance Corporal Aniyah Musa	Chapter opening, left.
	COG Tags — Lance Corporal Ava Wilson	Route to reactor.

Chapter 6 — Critical Failure · 5 collectibles

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Final refinery rooms[2]
Done	Item	Landmark
	Bust of Allfather Decha Timgad	Refinery entry.
	Damaged Gas Mask	Open area before tunnel.
	Tyran Business Monthly	After reunion: left room.
	Memorandum to Dr. Elliot	Story office.
	Dalia Fabbri’s Research Journal	Final room before boss.

Compare 13 / 2 / 14 / 5 / 2 / 5, then continue to Act 5’s final 12 items. The ending items in that guide have an additional spoiler warning.

Sources & further reading

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