Here is the full list of all 23 Yelaxot achievements.
Collect your first green Sacred Stone shard.
Collect your first blue Sacred Stone shard.
Collect your first red Sacred Stone shard.
Collect your first Power Tablet.
Kill 20 enemies in the world of Yelaxot.
Die 5 times in the world of Yelaxot.
Win a game in Yelaxot Pong.
Have a drink at the Zentaport City Bar.
Collect your first Artifact.
Beat all 15 levels in Super Skimo World.
Collect the gold coin on every level in Super Skimo World.
Save the world of Yelaxot from extinction.
Save the world of Yelaxot on hard mode.
Save the world of Yelaxot on rage mode.
Find a secret area in the world of Yelaxot.
Collect your first Yellow Zekro Orb.
Collect your first Orange Zekro Orb.
Collect your first Pink Zekro Orb.
Complete Yelaxot 101%.
Solve a puzzle in the world of Yelaxot.
Explore the entire world of Yelaxot.
Obtain milk from Dauphin Farms.
Begin your adventure in the world of Yelaxot.