The Callisto Protocol: All Ingame Collectibles Guide | Grim Reaper Achievement

At the very start of the game, when you can walk for the first time, enter the first room on the left that shows green text “Unlocked” on the door, it’s in that room on the shelf.

Inside Surgery M112 after avoiding the robot, where you grab the fuse, sitting in the corner.

After returning to the prison cells where you fight four enemies, enter Elias’s cell to find this.

After the cutscene with Cpt Ferris, sitting on the table.

After encountering the first type of enemy that spits green slime projectiles at you, go straight to the end of the corridor into Recreation A225, then in the back of the room in a little side office, climb up the wall into a vent. When leaving the vent on the other side there’s a damaged security robot standing in front of you and a corpse on the ground. Clear out the two enemies in this room and interact with the locked door to Laundry B202. After this, Elias tells you to find a Guard’s Corpse. Backtrack to the damaged security robot, now you can harvest the Implant Bio from the corpse on the ground, in front of the security robot.

After harvesting the previous bio you can go through the door to Laundry B202. At the end of this room are doors leading left and right. Go through the door to the right, follow this path all the way to the end into Office B112. There you find a corpse to harvest.

Backtrack to the main laundry room with the doors heading left and right. This time go through the door to the left. Continue forward and interact with the wall panel to open the door, then crawl through the vent to the right. After leaving the vent continue dropping down the holes in the floor. At the bottom of this underground section, enter the secret room. The bio is in there on the main table.

Climb back up using the ladder. This time go through the door to Maintenance B414, which leads to the door of Medical Ward C101. Immediately after opening the door to Medical Ward C101, this corpse is on the floor in front of you.

After getting the GRP and going through a few doors, you’ll be in a room with lots of hanging bodies. This harvest body will be on the ground in front of you, in the middle of the room.

After using the maintenance elevator and it crashing in the basement, check near a spinning fan in the basement, on a corpse around to the side.

After crossing the gondola, climb up to where the two fuse switches are to find this corpse next to them.

You will find it in the cell Dani locks you in during a cutscene, hard to miss.

After going through an area with sludge on the floor, you will crawl through more sludge and will see a body being snatched up by a monster. Afterward follow the linear path until you climb up to another short vent-path and then drop out the other side where the sludge stops. On the left, in front of the door to “Purification B H207”, climb up the box to the small balcony with a resource chest on it. Next to this chest you find the collectible on a box.

From the last collectible, climb back down and enter the vent to the left of the door to “Purification B H207”. This leads to a room with 2 Gate Fuses you must pick up and place on the switches around the room (mandatory for advancing story). In the corner of the room near the exit is a corpse you can harvest.

After using valves and getting through the vent you opened with the last one, you will eventually end up in a room where you have to switch fuses again. The fuse can be found after climbing a ladder on the right. After opening the room you will end up in a hallway and you can either enter “Water Control H262” on the right or “Storage Hall H239” at the end of the corridor. Enter the Storage Hall H239, after switching fuses again and going through a decontamination chamber, you will find it on the right side of the room.

Automatic from story progression, when you complete objective “Get Code from Guard”. You have to pick it up in order to progress. On the corpse in the room where you get introduced to enemies with tentacles.

This is an automatic pickup from story progression, unmissable. Much later into the chapter (about 15-20 minutes later), after a long water slide section and after passing through the outside area into the Biodome (Botanical Garden). You pick this up automatically when completing the repeated objective “Get Code from Guard” after going through “Botanical H625” and climbing through a vent. (Note: you get multiple “Get Code from Guard” objectives throughout the chapter, this is a different one from the previous one, it’s about 10 minutes after a long water slide section, so just keep playing until the story forces you to pick it up, can’t miss it).

BUG WARNING: Make a Manual Save before picking it up! This collectible is known to not register in the Data-Bios Menu in some circumstances, especially if you die after picking it up it may unregister. Check immediately after picking it up. If it’s blacked out you must reload last autosave and recollect it.

In the same place as the last collectible. Instead of immediately using the harvested Data Bio from the Guard on the console, go through the opposite garden area “Botanical H264”. At the end of this area you can squeeze through a gap to find it. Reminder: if you die after leaving the botanical gardens, you may need to pick this up again (depends when the game triggers a checkpoint for you, so check the Data-Bios Menu in case you die after leaving the area).

After the previous story section you will end up outside again and will have to head to the newly unlocked section. There you can either shiv the door or go down the hatch. Shiv the door first and at the end you will find it. There’s a Spitter and some normal enemies spawning here.

After the scene with Elias and Dani head through the gate in front of you. You will see one open building on the right and one straight ahead at the end of the area. Head straight and find it on a shelf there.

Automatic from story progression. You will get it after surviving the onslaught in the snowy area and find it on a corpse once the door opens. You have to pick it up to complete Objective.

Once you enter the tunnels and crawled under some debris, you reach the first road split and can either go left or right (path straight ahead is blocked by debris). Go left to find it.

After a big fight in a hangar area, there’s a cutscene where Dani gives you the shotgun “Riot Gun”. After the cutscene head upstairs and find the corpse on the floor behind the tables.

Inside the Power Station, after using a console to open the gates, head into the next room (“Prisoner Transfer S408”) and on the ground floor you can find the corpse stuck in spinning blade contraption. Picking it up will reactivate all the environmental traps in the room and triggers enemies.

When you return to your crashed spaceship check the second room on the left.

Shortly after the previous collectible you walk through snow and then squeeze through a gap to enter the hangar with Dani. On the right side of the hangar, check the vehicle’s back to find the corpse.

In the room with several dying security robots, where Dani calls the Elevator. In the right corner of the room you can find this while you wait on the elevator to arrive.

After Jacob frees himself from the wires while hanging upside down. Kill the first enemy and follow the path. In the next room with an enemy it will be in this room on a workbench.

You will come to a section with a grabbing snake-head enemy followed by 5 blind ones roaming the area. When entering the next corridor go left and find it on some crates. You can also start working on Trophy: Giving Back here by stabbing the blind enemies from behind. Just keep doing this throughout the chapter until you killed 6 blind enemies total for the trophy.

After using the keycard to enter the power tunnels. At the first road split don’t go downhill yet, but instead enter the corridor to find it at the end there.

After an encounter with a spitter and crawling enemies on the ground who have their legs cut off, you must squeeze through a gap and climb a ladder. After the ladder, straight ahead you can squeeze between the rocks and to the right is the Power Reactor. Squeeze between the rocks straight ahead (don’t enter Power Reactor room yet). Finish the path and you can find this data as well as Secret Room 2 here. The Commonality Trophy also pops here when entering the secret room (you may also need “Data-Bios #7 – Duncan Cole: Secret Room 1” from Chapter 2 to unlock the unlock here).

After defeating two-head, step off the platform and follow the path to find this on a corpse, before entering the next door.

At the very beginning of the chapter, go down the little staircase where you start, turn left to find it on a corpse in the middle of the path.

After a scene where Dani tells you to meet her at the tower. Enter the next room and check the shelf before going down the ladder.

In the next area with the blind enemies head up the ladder. Immediately after climbing up check the first electronic door on the right that shows green text “Unlocked” on it. It’s on a corpse in that room.

After taking the elevator up it will be right in front of you after exiting the elevator.

Shortly after the previous collectible, after going upstairs to the rooftops, it’s in the first house on the right, on a corpse. Before reaching a sign with 2 arrows pointing left and right to “Bathroom” and “Roof Top”. (You must find a Gate Fuse in this area too)

At the end of the area from the previous Collectible. After using the Gate Fuse to open the door, it’s on the floor in front of the crafting station (shop where you buy/sell items).

Much later into the Chapter (about 20-30 minutes later). After the Cpt. Ferris boss fight you will ride a moving platform with a longer cutscene of Dani (takes 1.5 minutes). After stepping off the moving platform you find it on a box on the right.

After defeating yet another two-head and opening the door with the fuse, at the end of the hallway when going in the left direction.

In the psych ward after crawling through a vent to obtain a fuse, check the blocked stairs that you can go up halfway.

After fighting yet another two-head + mobs in a hallway with big fans, continue on and Dr. Mahler will open a door for you telling you to get inside. After going through the door check the right side to find it. :gold: Grim Reaper Trophy should unlock here! (If not, check your inventory and make sure all Data-Bios are registered from previous chapters, if one is missing you must replay the game).

After taking the elevator up to the tower with Dani, this Data-Bio will be sitting on a white desk in the gallery-looking room after exiting the elevator. The trophy should already have popped from the previous Collectible but this one is the final entry in the Data-Bios menu.