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