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.
Escape from the simulation.
Help Rhonda find her son.
Agree with the simulation owners
Find the Panda's diorama in Axis Mundi.
Find Morty the robot in Axis Mundi.
Visit 15 different locations in Axis Mundi.
Find the Harvest Time rift.
Create 5 items in the Forge in Knight's Code.
Collect 10 iron.
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.
Gain Trolls respect in the bar.
Help the Bandit escape in Harvest Time.
Find all the clues written on the boards.
Surprise Jester in the theater.
Complete all the fetchquests from Troll King.
Help Ramon to force another player out from Twisted & Perverted.
Destroy the simulation
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.
Unlock all codebreaker modes.
Break out of the prison.
Collect 3 memories of Ken.
Get to the Umbra's House.
Get the maximum profession tier in at least two paths in one playthrough.
Create Ken's V-Ghost from his psychoscan.
Use the brainfix on yourself.
Gain Sleeves respect in the bar.
Order a whiskey at Yet's bar.
Explore all death hypotheses in Fallen Hero.
Meet the diginet in the street.
Search all the trash bins in Fallen Hero.
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.
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.
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.
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.