Here is the full list of all 21 Echo of Ayllu achievements.
Obtain the Starter Deck
Finish the Terra Campaign
Beat Redstalk 10
Grow your collection to 50+ cards.
Gain a Mythic card
Create a foil card
Craft a ship
Reach Level 10
Win a match without losing a character.
Win a match with a 10 or less gems deck
Win a match by destroying all of your opponent's characters.
Kill a character with Rene
Kill 3 characters with one Fragmented attack
Attack with Zes
Have 1000+ attack with a character
Paralyze 3 opponent characters at once
Complete all Terra Challenges
Complete all Proxima Challenges
Complete all Elysia Challenges
Unlock one mastery row
Unlock three mastery rows