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The Descent and Ground Zero

Down a spore-filled tower to a hospital, through the hospital to its garage, then a short walk back at the aquarium.

Three chapters. The Descent drops floor by floor down a hotel tower, from the pool to the street, with three artifacts, five coins, the Flamethrower and the last of the 14 safes on the route. Ground Zero crosses a hospital: five artifacts, two coins and a workbench, then a long fight against a huge infected, where fire works best. Return to the Aquarium is a short walk with nothing to pick up. A warning before each drop or door that matters says what to take first.

Coin: IllinoisHidden spoiler – activate to revealCollectibleMinor spoiler
Artifact: Gym Safe CodeCollectible
Location
Seattle Day 2 · The Descent – Go through the double doors by the pool and on through the gym to Orchards Juice Bar. The note is pinned to the board in the office behind the counter.
Summary
A note in the juice bar that points to the gym safe's code.
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Safe: Hotel Gym Storage RoomOther
Location
Seattle Day 2 · The Descent – Leave the juice bar and walk to the far end of the hallway with Hotel Blacray written on its windows. Open the green door by the desk into a storage room, enter 12-18-79 and open the safe: finding it isn't enough. The note in the juice bar says the code is the gym's Wi-Fi password, which is written on a Wi-Fi sign.
Summary
One of the 14 safes, in a storage room off the gym's hallway. It holds Supplements.
Trophies
  • Achievement · SteamSafecracker
  • Silver · PlayStationSafecracker
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Before the stairwell

Take the pool coin, the Gym Safe Code and the gym safe before you push into the stairwell.

Artifact: FEDRA OrdersCollectible
Location
Seattle Day 2 · The Descent – With the safe open, go back into the hallway and push open the door to the stairwell: the note comes off the body that was blocking it, with nothing to press.
Summary
A note taken automatically on the way into the stairwell.
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Gym floor and the stairwellHidden spoiler – activate to revealQuest stepMinor spoiler
Location
Seattle Day 2 · The Descent – Head down the stairwell and open the door at the bottom: a scene plays and you go on into the spore floor alone, wearing a mask. Lev has none, so the task is to find him one.
Summary
Down the stairwell to a floor full of spores, which you enter alone.
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Supplements: Spore floor, room behind the stairwellUpgrade
Location
Seattle Day 2 · The Descent – As soon as the scene ends, turn around and go back to the room at the hallway's far end: they are in the living-room drawer at the back right.
Summary
Supplements in the room behind you as the spore floor starts.
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Supplements: Spore floor, bathroomUpgrade
Location
Seattle Day 2 · The Descent – Cross the metal beam over the pit and squeeze through the gap, then turn left and follow the way to a bathroom (the one joined to room 1907): they are in the drawer at the sink.
Summary
Supplements in a bathroom on the spore floor.
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Gas mask for the companionHidden spoiler – activate to revealKey itemMinor spoiler
Location
Seattle Day 2 · The Descent – From the stairwell, cross the metal beam over the pit and squeeze through the gap to room 1904; the mask is on the body by the bed. Taking it releases six stalkers that keep moving through the rooms outside: clear them room by room, or wait in the first bedroom and pick them off as they come to you.
Summary
A working gas mask so Lev can cross the spores. Picking it up lets loose a pack of stalkers.
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Artifact: FEDRA Final NoteHidden spoiler – activate to revealCollectibleMinor spoiler
Location
Seattle Day 2 · The Descent – Take the mask back to Lev the way you came. Boost him up the wall to the fire hose above, then drop it through the hole and rappel. At the bottom, go into the first side room on the right: the note is on the floor beside a body.
Summary
A note in the first room below the rappel.
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Parts: Clicker room below the hoseUpgrade
Location
Seattle Day 2 · The Descent – Follow the main path, where a clicker bursts out of a wall, and drop to the next floor. After the beam, a clicker waits round the corner to the left and another hides in a growth on the right; the Parts are on the table across from the left one.
Summary
Parts on a table one floor below the rappel.
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FlamethrowerWeapon
Location
Seattle Day 2 · The Descent – From the note, follow the main path (a clicker bursts out of a wall) and drop to the next floor, where two more clickers wait past the beam. On that floor, squeeze through the door into the bathroom and cross the short wooden beam: the Flamethrower lies on the left in the room beyond, near an infected fused into the wall (shoot it first).
Summary
One of the 12 weapons, on a dead soldier past a bathroom beam.
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Supplements and Parts: Ledge rooms one floor downUpgrade
Location
Seattle Day 2 · The Descent – Cross back over the beam, go right to the broken floor and drop down. Before you go into room 1302, turn the other way and follow the narrow ledge: Supplements in the bathroom drawer, Parts in the next room by the ledge.
Requires
Summary
Supplements and Parts in two rooms along a narrow ledge.
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Parts: Shambler roomUpgrade
Location
Seattle Day 2 · The Descent – Go through room 1302, where two clickers stand with their backs to the door (or drop through the first door on the left), and cross the next beam to a room with a Shambler pacing. Kill it (the Flamethrower works well) and open the drawer in the table to its right.
Summary
Parts in a drawer beside a Shambler.
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Supplements: Landing after the long beamUpgrade
Location
Seattle Day 2 · The Descent – Go back to the end of the first beam and take the second one, the long metal beam, then sprint and jump down a floor: an infected bursts out of the wall in front of you. The Supplements are straight ahead under a table lamp.
Summary
Supplements under a table lamp where you land.
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Coin: OregonCollectible
Location
Seattle Day 2 · The Descent – From the Flamethrower, cross back, drop through the broken floor and go through room 1302 (two clickers stand with their backs to you) to the beam beyond. Where it lands, take the second, long metal beam and sprint-jump down a floor, where an infected grabs you from the wall. Turn round and jump the gap into the open doorway behind you (room 1107): the coin is on a small ledge on the right.
Requires
Summary
One of the 32 Coins, in a room across a gap. It is easy to miss.
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Before the elevator shaft

Take the FEDRA Final Note, the Flamethrower and the Oregon coin before you climb into the elevator shaft.

Down the tower and the elevator shaftQuest step
Location
Seattle Day 2 · The Descent – From the coin, jump back across and keep dropping floor by floor until you land at a door with infected moving behind it. Push through: clickers roam, infected wait in the walls on the right, and a Bloater stands by the elevators. Sneak past it (throw something to draw it off) or burn it, since the Flamethrower keeps it stunned while you spray; then open the elevator at the back and drop down the shaft to the car below.
Summary
The lower floors of the tower end at a floor with a Bloater by the elevators.
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Coin: WisconsinCollectible
Coin: Rhode IslandCollectible
Location
Seattle Day 2 · The Descent – Carry on out of the building, where the masks come off, to a plaza with a bar in the middle. Go behind the counter: the coin is at its end, by the cash register. If it isn't there, look under the long table.
Summary
One of the 32 Coins, behind an outdoor bar.
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Reach the hospital compoundHidden spoiler – activate to revealQuest stepMinor spoiler
Location
Seattle Day 2 · The Descent – From the plaza, go into the building at its back and follow Lev. Soon you go on alone: swim across the water to the hospital compound, where the guards let you through the gate.
Summary
From the plaza to the gate of the hospital compound, the last stretch on your own.
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Coin: MissouriCollectible
Location
Seattle Day 2 · The Descent – Once the guards finish talking, don't head for the hospital yet. Turn right through the tall grass into the building there (the Specialty Care Center) and follow its hallway to the end: the coin is on the floor.
Summary
One of the 32 Coins, in a building beside the hospital gate.
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Before the hospital's main door

Take the Missouri coin first. Opening the hospital's main door starts a scene and the next chapter, and you can't come back to the compound after it.

Coin: WashingtonHidden spoiler – activate to revealCollectibleMinor spoiler
Location
Seattle Day 2 · Ground Zero – With the coin, open the hospital's main door: a scene plays and the next chapter begins. Follow Nora down the first full flight of stairs into the cafeteria; the coin is behind the counter on the left.
Summary
One of the 32 Coins, behind a cafeteria counter at the bottom of the first stairs.
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Artifact: Annex LetterHidden spoiler – activate to revealCollectibleMinor spoiler
Location
Seattle Day 2 · Ground Zero – Keep following Nora to the door of the Oncology Center, where you go on alone. Walk through the Atrium to the first staircase, and before going down crawl under the rubble on the right into a dark room: the letter lies on the floor by a body in front of you.
Summary
A letter in a dark room off the Atrium, reached by crawling.
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Artifact: Soldier's LetterCollectible
Artifact: Chapel NoteCollectible
Artifact: Patient's NoteCollectible
Location
Seattle Day 2 · Ground Zero – Back in the main hallway, go through the yellow door in the quarantine barrier and to the end of the tunnel. In the area beyond, the second door on the right has 24 beside it: break its window and climb in, and take the note from the stretcher with a body on it.
Summary
A note on a stretcher behind a window in the quarantine area.
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Supplements: Quarantine areaUpgrade
Location
Seattle Day 2 · Ground Zero – Leave the room and head left, past the door marked Trauma Center, toward the gap into Surgery. Turn round into the small examination room there, across from the note's room: they are on the top shelf of the cabinet on the left.
Summary
Supplements in a small examination room across from the note.
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Artifact: Doctor's NoteCollectible
Location
Seattle Day 2 · Ground Zero – From the note, head left past the door marked Trauma Center and squeeze through the gap into Surgery. The open room on the left has an infected stuck in its wall: shoot it or keep clear. The note is on the desk in the next room along, the second; if it isn't there, check the room after it.
Summary
A note on a desk in the surgery wing, which is full of infected.
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Workbench: Hospital Generator RoomArea
Location
Seattle Day 2 · Ground Zero – In the note's room, climb through the hole in the wall above the cabinet. The workbench is in the room through the door on the left, the same room where the power is switched on.
Summary
A workbench in the generator room behind the surgery wing.
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Parts: Generator roomUpgrade
Location
Seattle Day 2 · Ground Zero – In a FEDRA container straight ahead as you climb through the wall, and on the shelf just left of the workbench and the one right of the door you came in by.
Summary
Parts on both sides of the broken wall.
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Supplements: Powered room off the clicker corridorUpgrade
Location
Seattle Day 2 · Ground Zero – Start the generator by the workbench and switch on the power box, then go out through the newly powered door: the locked doors in the hallway open and three clickers roam. Once they're dealt with, the first door on the left is the Recovery room: shelf on the left. The growth in the middle of the room is an infected that attacks if you go near.
Summary
Supplements in a room that opens once the power is on.
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Supplements: Supply RoomUpgrade
Location
Seattle Day 2 · Ground Zero – At the far end of the same corridor, on the right: some on the shelf by the door and more behind glass on the left. Smashing the glass draws every enemy nearby.
Summary
Supplements in the Supply Room at the end of the corridor.
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Before you take the case

Take everything in the hospital first: the cafeteria coin, the five notes on the way down and the workbench. Taking the case from the ambulance starts a chase.

Ambulance medical suppliesKey item
Location
Seattle Day 2 · Ground Zero – From the workbench, start the generator and switch on the power box, then go out through the newly powered door: three clickers now roam the hallway, so deal with them. Leave by the door you first came in through; a door that was shut has a fleshy hole torn in it now. Follow the blood trail into the garage and search the ambulance on the left for the case.
Summary
The case of medical supplies in an ambulance in the hospital garage: the goal of the chapter.
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Rat KingHidden spoiler – activate to revealBossMinor spoiler
Location
Seattle Day 2 · Ground Zero – Run along the path through each door; where you can turn left, pull the axe out of the door and mash the button when prompted. You land in a closed area with it: keep moving, use narrow gaps and obstacles to slow it, stay out of its acid and never let it reach you, as its grab kills. Fire hurts it most, so burn it with the Flamethrower; when a Stalker tears off it, keep hitting the big one. Then take the marked exit, turn right and climb into the ceiling crawlspace: the Stalker drags you down, so finish it with the shotgun and the Flamethrower.
Summary
The fight the case sets off, against a huge infected and the Stalker that splits away from it.
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Coin: HawaiiCollectible
Location
Seattle Day 2 · Ground Zero – With the Stalker dead, open the shutter at the back left into the flooded garage. Turn left at once to the small security booth and smash its windows: the coin is inside.
Summary
One of the 32 Coins, inside a security booth in the flooded garage.
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Supplements and Parts: Flooded garageUpgrade
Location
Seattle Day 2 · Ground Zero – Supplements sit on the box beside the booth. For the Parts, go on round the garage to the truck and climb into its back rather than squeezing past it.
Requires
Summary
Supplements by the security booth and Parts in a truck.
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Before you squeeze past the truck

Take the Hawaii coin from the security booth first.

Out through the flooded garageHidden spoiler – activate to revealQuest stepMinor spoiler
Location
Seattle Day 2 · Ground Zero – From the booth, go round the garage to the truck and squeeze through the gap beside it to leave the hospital. Climb the muddy slope on the left to rejoin Lev; a scene ends the chapter.
Requires
Summary
Out of the hospital past a truck in the flooded garage, back to Lev.
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Survival TrainingAchievement
Location
Seattle Day 2 · Return to the Aquarium – Buy skills from the backpack's skill trees whenever you have the Supplements; skills bought by either character count toward the 25, and the trophy pops with the 25th. Pick up Supplements as you go, even with optional rows hidden.
Summary
Learn 25 player upgrades.
Trophies
  • Achievement · SteamSurvival Training
  • Silver · PlayStationSurvival Training
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About this guide

Three runs of the story, plus No Return alongside any of them. Run 1, on any difficulty below Grounded, takes every collectible, safe, manual, weapon and workbench; before the last chapter of that run, make a manual save to keep for cleanup. Run 2 is New Game+ on Very Light with Permadeath set to Per Chapter: it finishes the upgrades, which one run doesn't give enough Supplements and Parts for. Run 3 is Chronological mode on Grounded. After the credits, Chapter Select replays a chapter, with limits: the chapter list follows your latest autosave, so replaying an early chapter hides the later ones until you reload the cleanup save, and Supplements and Parts taken on a replay don't count toward the upgrades.

Last verified: Nov 12, 2026 · Patch Remastered, latest patch (PS5, PC on Steam and Epic) · 0 community corrections shipped

Unofficial fan guide. Not affiliated with the publisher.