The Callisto Protocol guide - where to find all audio recordings and implants with biographical data

 The location of all collectibles in the game, how to get the "Grim Reaper" achievement

Throughout the eight-story chapters of The Callisto Protocol, players can find 43 biographical implants and audio recordings. Collecting all of these collectibles will let you learn more about the game's storyline and unlock the in-game achievement "Grim Reaper".

It is important to note that the save system used in the game affects how collectibles count. In the case of a manual save, you record the progress that was made up to the last checkpoint triggered by autosave. Thus, be careful: if you pick up an implant or an audio recording after this checkpoint, manually save and exit the game, when you restart the item will not be saved! Therefore, you will have to pick it up again.

After picking up the collectible, do not rush to leave the game. Get to the point where the round “autosave” icon appears in the lower right corner before exiting the game, otherwise, you will have to pick up the item again.

Chapter 1: Cargo

Jacob Lee: Jacob's Work

This audio log is located at the very beginning of the game. You can pick it up after you gain control of Jacob leaving the cockpit. Go forward along the corridor and at the very end turn left. Use the door leading to the living quarters. Then turn left and interact with the locker between the bunk beds and the table.

Chapter 2: Outbreak

Dr. Caitlin Mahler: Mahler's approval for the position

Eventually, you will reach a section where you will need to sneak past the security bots. Sneak past the first robot, moving through the vents and other parts of the area. Go through the door labeled "M105 Medbay" to enter a new area where there will be a second robot.

Use the shiv to open the red locked door ahead (Intensive Care M109). Continue on and go through the green door (M105 Medical Ward) near the corpse hanging over the wall. On the other side of the door, you will see another green door (M110) that leads to a room with a large glass window and the surgical device that Jacob was previously sitting on.

Enter this office (Surgery M112) and look to the right of the stairs at the back of the room. The collectible is on the left side of where you pick up the first gate fuse to open the insulator.

Elias Porter: Elias' Hope

After leaving the weapon storage and returning outside, follow the corridor past the bridge leading to the base of the guard tower. Go to Elias Porter's already opened cell. watch out for enemies that can attack you as you move through the archway by the bridge. Jump over the rubble and turn right to find an audio recording on the table on the right.

Captain Leon Ferris: Ferris' Complaints

After the cutscene in the Panopticon Control room inside the guard tower, look for this audio log on the corner of the central table, in the control room with a blue hologram.

Chapter 3: Aftermath

Sergeant Eric Jane: Locked Door

After encountering the first ranged enemy in The Callisto Protocol, move across the area and crawl through the vent to enter a room with a robot and other enemies. Clear the area and interact with the locked laundry room B202 in the back. Move towards the robot and interact with the corpse.

Officer Pruitt Mathos: Laundry

Go through the locked laundry room door and follow forward, down, and to the right. Continue moving deeper into the location and fight with an unexpectedly appeared enemy. After that, go through the door on the right side. At the bottom of the descent, go to the right side and follow the left past the large washing machines. Go past the half-raised door to office B112. Interact with the corpse lying on the floor.

Duncan Cole: Chamber of Secrets 1

Return to the first floor of the laundry room and this time go through the left door. Move down the slope and go straight until you see a room with a large glass window. Open the door on the right side using the sharpener. Go through the lower air duct to the right.

Once on the other side, follow to the end of the stone path and drop down into the hole in the floor. After landing, turn left and go to the very end, squeezing through the door to enter a room with red flags on the walls. The audio log is on a table at the far end of the room.

Dr. Ewen Hayes: Medical Lab Outbreak

Use the stairs next to the secret room to return to the room with the air duct you just crawled through. Once outside, fight two enemies. Go back to the ramp leading down from the laundry room doors and open the B414 tech room door on the right-hand side. Follow the linear path, fight the glass-breaking enemy, and go through gate B433. Open the door at the very end to enter a medical lab with a stretcher, a flickering light, and a passage to the left. Interact with the corpse lying in a pool of blood.

Officer Dahs Simmons: The Hanged Guard

After passing through the med lab, you will reach a door labeled Maintenance C110. After passing through it, you will see a gloomy scene with hanged and disembowelled guards. Interact with the corpse on the ground to get another audio log.

Officer Kerry Brown: Private File

Go down the elevator. Outside, successfully complete the QTE sequence, then keep to the left and climb up the ledge. After encountering the second tentacle monster, jump down. Follow to the left side and go right to the fan.

Turn left and walk forward towards the fire. Turn left again. Interact with the second corpse, closer to the fan. A monster will jump out of the vent, so be prepared for that.

Tadh Song: A Private File

Use transportation to get to Shu. After the ride, turn left and climb up the ledges to the upper platform. Interact with the corpse on the ground near the switch.

Dani Nakamura: Private

Take the elevator down from the control room, kill the enemies and interact with the middle camera control panel on the right side. After the cutscene, enter the cell and pick up the item lying on the table.

Chapter 4: Residential Dome

Dr. Caitlin Mahler: Corruptionists

Following along the red pipe, you will find yourself in a sewer with a rotating mechanism. Fight the enemy and turn the valve on the far side to open a passage further.

Towards the end, a guard in the mud will appear and be torn apart by a terrible monster. go forward through the pipe and jump down. Turn left to view another hologram from Elias. Climb up the crate ahead and reach a small platform. Examine the boxes along the wall to find the right item.

Bruno Vorenus: At gunpoint

Follow the main path, jumping down and making your way through the hole at the door. Once you enter the caves, continue to the next area and stick to the right side to pick up the first blue fuse on the crate in the center of the area. The second fuse is in the far right corner, again on a crate, next to a corpse on the ground. Interact with the corpse near the door leading to hallway H271.

Dr. Jay Moon-Bell: Cocoons

After passing through the underground water area with a floating monster, you will find yourself in a spacious location with metal ladders, pipes, and huge square windows on your left hand. Fight the enemies and take out the gate fuse to open the door to hall H206. Follow to the end of the path and use the shiv to open the door to utility room H239.

Go forward, open the next door. Take the fuse from the gate on the right side and use it on the door opposite. After the disinfection procedure, move to the far right corner and search for the corpse on a gurney.

Officer James Reese: A Private File

After you first learn about the mutating enemies and the need to destroy the tentacles, you will find yourself in a room on the wall of which is written "Shoot the tentacles." Interact with the dead guard on the chair by the same wall to get an access code and an audio recording.

Sergeant Bill Pekelo: A Private File

Get to the "Oxygen Purifier" inside the Habitat Dome and go through the door on the right side, to H625. Follow to the end of the path and go through the door on the left hand. Keep moving up and to the left, climbing over the pipes into a large open room. At the far end of this place, a wall-crawling monster will appear. After destroying it, use the box at the end of the corridor to get into the air duct where the enemy came from. Follow the air duct and drop down to find a corpse on the right side with an access code and biographical data.

Officer James Reese: Security

Go through the nearest door marked H624. Go to the end of the hall and enter the door on your right, Utility Hall H626, located near the 02 Botanical Recycling sign hanging from the ceiling. Climb the stairs, go to the right side and make your way through a small hole in the wall. Interact with the audio journal lying on the box on the right hand.

Officer Kyle Serra: Extraction

From the Oxygen Purification, return to the street and follow the markers to the service building; look for a door labeled Utility H630. Inside, use the shiv to open the door on the left side. Go to the end of the path (the "Depot Entrance" sign hangs on the ceiling), defeat the enemies and inspect the chest on the left side, where the biographical data lies.

Chapter 5: Lost

Miranda Kristofich: Terraforming

After the crash beacon cutscene, open the gate leading to the next hangar. Go through them, follow to the back of the location, and into the doorway ahead. Examine the shelves on the left side to get a new audio journal.

Richard Seeds: A Private File

Make your way through the area until you end up at the second gate located behind the broken bridge. One of the workers will ask for help. Keep to the right and look for a lighted doorway with a large mast with 6 lanterns on top. Get closer so that the monster breaks the door. Defeat all enemies and inspect the body lying on the floor.

Dr. Caitlin Mahler: Fireboxes

After that, move into the tunnels. Follow to the end of the path and make your way through the blockage. On the second side, go to the left side, into a short corridor leading to a room with radioactive barrels. On the table to the right of the barrels is the desired collectible.

Lieutenant Devon Wayne: Close the gate

Having met an ally in the garage and received a shotgun from him, climb the stairs and open the door. Examine the body on the other side of the tables, on the left side of the room.

Aaron Taicho: A Private File

Once at the second power plant, open the gate blocking the path (near the zombie sitting in a cage) and go through the door to the location with a large fan on the right. Look for a stuck body in the turbine next to the fan. Interact with him to get another collectible.

Max Barrow: Max's Alarm

After riding the snowcat, enter the ship and follow forward. Go through the combat compartment and turn into the second doorway on the left. The biographical journal is on the table to the right.

Sgt. Scott Duitney: Annihilation

After the cutscene on the ship, follow Dany to the next building by using the hole in the doorway. Inside the building, move to the right side and get to the snowcat. Interact with the corpse lying on the floor.

Dr. Caitlin Mahler: Supplies

Keep moving until you eventually reach an area full of corpses and malfunctioning robots. It's on the way to the elevator. The audio-bio-log you need is on a crate next to a corpse with no legs, directly across from where you enter from - to the right of the elevator, next to a small staircase.

Chapter 6: Underground

Dr. Shihan Yun: Field Diary 1

Having fallen to the bottom of the elevator shaft, destroy the blind zombie and follow down the stairs. Go to the next room and go down. Examine the table on the right side of the room and find the collectible next to the graffiti that says "Don't make a sound."

Dr. Shihan Yun: Field Diary 2

Eventually, you will crawl through a tunnel in a cave. Once on the other side, climb onto the ledges and move across the open area with the tentacle monster and four blind zombies. Go through the door on the other side of the location and immediately turn left. The audio log is on a crate at the very end, next to a small blue item container, across from the broken path going up.

Dr. Shihan Yun: Field Diary 3

Enter the Access Junction Energy Tunnels after obtaining the Elevator Keycard. Follow the circle and go through the hole on the right (do not rush to move down). Interact with the corpse lying on the ground at the end of the tunnel on the right side.

Yannick Sage: Chamber of Secrets 2

In the end, after going through many rooms and locations with blind zombies, you will reach the stairs leading up, and the fan in the wall behind it. Make your way through the crack in the wall above. Follow the linear path down through the narrow tunnels until you reach the second secret room. The audio log is on the table in the back.

Arden Jeddha: Evacuation of Arkas

Once the elevator arrives at Arkas Station (after the hardest boss fight), exit it and head towards the door on the far wall. Examine the corpse in front of the stairs leading to this door for biographical information.

Chapter 7: Colony

Alex Wang: Diary of a Miner 1

As soon as the chapter begins, follow forward and turn left. You will see a large bronze Welcome sign hanging from the ceiling, under a flickering light source. There is a body in your path. Pick up a collectible.

Derrin Barr: Diary of a Miner 2

When you get to the Colony and Dany mentions the tower of light, turn left to follow the path. You will reach a ladder leading down; this audio log with biographical data is on the shelf to the right side of the stairs, just before the descent.

Derrin Barr: Diary of a Miner 3

Eventually, you will find yourself in an area where blind zombies are chasing you. At the back of this area, there is a locked elevator with a Lowtown Elevator Control sign above it. To his right is a building with a staircase and a Midtown sign. Climb the stairs, go to the right side and go left through the door near the window with a red flickering lamp. Go to the back of the room to find a corpse on the floor guarded by a blind zombie.

Yannick Sage: Spy

Take the elevator out of the slums and interact with the corpse lying on the ground directly in front of the elevator.

Budge Redwork: On the Surface

Climb up the stairs from the last collectible and go through another small hut. You will reach another staircase. After going upstairs, turn right and enter the house in front, opposite the building with the "Bathroom" and "Roof" signs.

Chigwan Park: Diary of a Miner 4

Go through the hut to the left side to pick up the gate fuse. Then return to the place where you found the previous collectible to continue moving forward. Soon you will reach a door that needs a fuse to open. Use the item you found earlier to discover a crafting station. There is a corpse on the left side. Interact with the body to get Chigwan Park's bio.

Duncan Cole: Discord

Leave the colony on the funicular. When, after the cut-scene, he stops, go to the snowcat, but keep to the right of it to find the implant on the box, on the other side of the funicular railing.

Chapter 8: Tower

Dr. Tala Ismene: Observation

Passing through the facility, you will reach a control room with a locked door (Panopticon Surveillance B330) and a spark switch. Find the fuse for the door in the nearest server room (the boss fight is waiting for you there) and go through it. Turn left and follow to the very end to the gate (note the two enemies that will appear here). On the table on the right side is an implant with biographical data.

Dr. Tala Ismene: Capture

Move through the mental hospital until you go down the stairs. At the bottom, exit the room and turn left. At the very end, you will see a door labeled Psyc Block 1 A140. Use the power glove to open the air duct on the right side of the door (beware of the two enemies that will attack you). Crawl along the air duct and go right. Grab the fuse from the gate in the room on the right side, go up the stairs and interact with the biocontainer on top to get another collectible.

Edward Bates: Experiments

Defeat the boss in the medical ward and go through the door marked R001. Head through the next area and grab the Biographical Data Implant from the piped metal object on the right side.

Duncan Cole: Cole's Triumph

After a lengthy cut-scene, take the elevator up to the tower, where the denouement of the game awaits you. Exit the elevator and go through the door to the museum. The audio log with the data is on the table in the far left corner.