Each episode has one achievement that is unlocked by finding all three bonus photos of that episode. The bonus photos can be looked at through the phone interface accessible on the main menu, in-game menu and during an episode's end credits (in which only that particular episode's photos may be viewed).
Interact with the Granboard. Answer "Punch the Granboard!" when interacting with her again to get this variant. Then interact with the open drawer in Cody's desk to get this variant.
Interact with the Granboard. Answer "Punch the Pizza Boy!" when interacting with the skeleton cabinet on the left side of the room. Then interact with the open drawer in Cody's desk to get this variant.
Interact with the Granboard. Answer "Punch the Carolina Reaper!" when interacting with the TV stand on the right side of the room. Then interact with the open drawer in Cody's desk to get this variant.
Answer "Forgive her." when interacting with Fluffy found in the back of the truck by Pizza Boy's apartment.
Interact with the bird's nest on the roof of Pizza Boy's apartment.
Interact with the mirror found in the changeroom while the lights are off.
Interact with the photocopier found in the the Librarinyan's office.
Achieve maximum Chillectricity for Pizza Boy by getting a bucket of water from the changeroom without interacting with the lockers, and then answering "Go around it." when faced with the cool dummy. Then achieve maximum Chillectricity for Cody by answering "Don't do it." when interacting with the library computer, answering "80082." when entering the Librarinyan's office, and/or exiting through the left door of the library. Playing through the scene outside the school will unlock the photo.
Season 2[]
Between Two Worlds[]
"Between Two Worlds" is the episode 11 achievement.
Interact with the portal on top of the Dream Gateway without having interacted with the Dream Gateway itself.
Interact with the pile on top of Mini's shelf to get a mug, then play through the scene where Ms. Sugoi leaves the classroom.
Achieve maximum Chillectricity by getting a mug from Mini's room. In the first part of the hallway, get a bucket and giant pencil from the book fair and use them to prank the shelf and vending machine. In the second part of the hallway interact with the open locker, then the water fountain, then the trophy cabinet. In the third part interact with the plant. Playing through the last scene with Juvie will unlock the photo.