Here is the full list of all 44 Anode Heart achievements.
Participate in a card tournament.
Get your First Tama!
Recruit 1 Sentient.
Recruit 10 Sentients.
Recruit 20 Sentients
Recruit 40 Sentients
Evolve 1 Tama.
Evolve 1 Tama to its 2nd stage.
Obtain the Cheese.
Defeat the first Segfault boss.
Obtain the Ice Key.
Obtain the Sand Key.
Obtain the Toy Key.
Start the secret Toy Castle quest.
Defeat Uthero.
Defeat Uthero twice.
Save the World.
Collect every single Tama.
Collect every single alt color Tama.
Beat the game with Time Limit on.
Beat the game with Stress Mode on.
Beat the game with Life Limit on.
Beat the game with Scarcity on.
Beat the game with Permadeath on.
Beat the game with Hardcore Time Limit on.
Beat the game with Hardcore Stress Mode on.
Beat the game with Hardcore Life Limit on.
Beat the game with Hardcore Scarcity on.
Beat the game with Hardcore Permadeath on.
Beat the game using a single Tama element.
Beat the game with all normal modes on.
Beat the game with all hardcore modes on.
Play a card game.
Obtain alt color Vixel.
Reap 3 souls with Qash'div.
Give pats to Skeltyr.
Defeat DEUS.
Defeat the segfaulted Vortex.
Defeat the segfaulted Rott.
Win your 1st tournament.
Reach the Expert rank.
Reach the Master Tamer rank.
Defeat Sto.
Set Extaeriel free.