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.
Destroy the simulation
Agree with the simulation owners
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 Morty the robot in Axis Mundi.
Find the Harvest Time rift.
Find the Panda's diorama in Axis Mundi.
Unlock all codebreaker modes.
Break out of the prison.
Collect 10 iron.
Create 5 items in the Forge in Knight's Code.
Do 5 quests for the Clan Masters in Knight's Code.
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.
Gain Trolls respect in the bar.
Use the brainfix on yourself.
Order a whiskey at Yet's bar.
Gain Sleeves respect in the bar.
Explore all death hypotheses in Fallen Hero.
Search all the trash bins in Fallen Hero.
Meet the diginet in the street.
Help the Bandit escape in Harvest Time.
Make Ken a pretty straightforward proposal.
Win a gun duel with the sheriff.
Use your deduction at least 15 times.
Get the maximum profession tier in at least two paths in one playthrough.
Listen to the 3 tales from the Rusty Ed.
Get 50 information for deduction.
Find two ways to reach the graveyard.
Get a gun in Harvest Time.
Fully expand your farm in Harvest Time.
Get 5000 Harvest Time's coins.
Reach the Farm Level 5 in Harvest Time.
Obtain the maximum profession tier.
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.
Scratch Haggis' golden frame.
Complete the solitaire in Haggis' office.