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