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.
Gain Trolls respect in the bar.
Meet the diginet in the street.
Help the Bandit escape in Harvest Time.
Surprise Jester in the theater.
Complete all the fetchquests from Troll King.
Help Starlett get out of limbo.
Destroy the simulation
Get the maximum profession tier in at least two paths in one playthrough.
Obtain the maximum profession tier.
Gather a team of at least 3 people.
Agree with the simulation owners
Lock 3 characters in the loop in Paradise Beach.
Get to the Paradise Beach.
Find Bliss in Axis Mundi.
Find the Panda's diorama in Axis Mundi.
Unlock all codebreaker modes.
Visit 15 different locations in Axis Mundi.
Find the Harvest Time rift.
Find Morty the robot in Axis Mundi.
Collect 10 iron.
Collect 3 memories of Ken.
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.
Get to the Umbra's House.
Gather 3 Poteto Gomuins in Knight's Code.
Create Ken's V-Ghost from his psychoscan.
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.
Make Ken a pretty straightforward proposal.
Win a gun duel with the sheriff.
Get 5000 Harvest Time's coins.
Find all the clues written on the boards.
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.
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.
Complete the solitaire in Haggis' office.
Scratch Haggis' golden frame.
Use the cat go through the gate.