Here is the full list of all 53 Gamedec achievements.
The base game contains 52 achievements, and there is 1 DLC pack containing 1 achievements.
Break out of the prison.
Collect 3 memories of Ken.
Get to the Umbra's House.
Use the cat go through the gate.
Gather 3 Poteto Gomuins in Knight's Code.
Create Ken's V-Ghost from his psychoscan.
Use the brainfix on yourself.
Gain Sleeves respect in the bar.
Gain Trolls respect in the bar.
Get the maximum profession tier in at least two paths in one playthrough.
Order a whiskey at Yet's bar.
Explore all death hypotheses in Fallen Hero.
Search all the trash bins in Fallen Hero.
Meet the diginet in the street.
Obtain the maximum profession tier.
Make Ken a pretty straightforward proposal.
Win a gun duel with the sheriff.
Use your deduction at least 15 times.
Get 50 information for deduction.
Listen to the 3 tales from the Rusty Ed.
Find two ways to reach the graveyard.
Get a gun in Harvest Time.
Get 5000 Harvest Time's coins.
Fully expand your farm in Harvest Time.
Reach the Farm Level 5 in Harvest Time.
Find all the clues written on the boards.
Help Fredo in Like Father Like Son.
Surprise Jester in the theater.
Complete all the fetchquests from Troll King.
Help Ramon to force another player out from Twisted & Perverted.
Get 20 aspects.
Get 50 pieces of information for the codex.
Help Starlett get out of limbo.
Complete the solitaire in Haggis' office.
Scratch Haggis' golden frame.
Help the Bandit escape in Harvest Time.
Do 5 quests for the Clan Masters in Knight's Code.
Collect 10 iron.
Create 5 items in the Forge in Knight's Code.
Unlock all codebreaker modes.
Visit 15 different locations in Axis Mundi.
Find the Panda's diorama in Axis Mundi.
Find the Harvest Time rift.
Find Morty the robot in Axis Mundi.
Find Bliss in Axis Mundi.
Get to the Paradise Beach.
Help Rhonda find her son.
Lock 3 characters in the loop in Paradise Beach.
Gather a team of at least 3 people.
Destroy the simulation
Agree with the simulation owners
Escape from the simulation.