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