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.
Use the cat go through the gate.
Meet the diginet in the street.
Help the Bandit escape in Harvest Time.
Collect 3 memories of Ken.
Find two ways to reach the graveyard.
Surprise Jester in the theater.
Help Ramon to force another player out from Twisted & Perverted.
Help Starlett get out of limbo.
Gain Trolls respect in the bar.
Do 5 quests for the Clan Masters in Knight's Code.
Collect 10 iron.
Make Ken a pretty straightforward proposal.
Escape from the simulation.
Destroy the simulation
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 the Panda's diorama in Axis Mundi.
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.
Gather 3 Poteto Gomuins in Knight's Code.
Get to the Umbra's House.
Use the brainfix on yourself.
Gain Sleeves respect in the bar.
Create Ken's V-Ghost from his psychoscan.
Order a whiskey at Yet's bar.
Get the maximum profession tier in at least two paths in one playthrough.
Explore all death hypotheses in Fallen Hero.
Search all the trash bins in Fallen Hero.
Obtain the maximum profession tier.
Win a gun duel with the sheriff.
Use your deduction at least 15 times.
Get 5000 Harvest Time's coins.
Listen to the 3 tales from the Rusty Ed.
Get 50 information for deduction.
Get a gun in Harvest Time.
Fully expand your farm in Harvest Time.
Reach the Farm Level 5 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.
Complete the solitaire in Haggis' office.
Scratch Haggis' golden frame.
Complete all the fetchquests from Troll King.
Help Rhonda find her son.