Here is the full list of all 32 Eryi's Action achievements.
Clear Eryi's Action.
Self-destruct in the Final Stage.
Enter a hidden floor.
Become a snowman.
Activate the electrobolt.
Collect all the jewels.
Reset encroaching spikes.
Enter a command in the Artie fight.
Activate the secret spinning block.
Make a freezing device explode in the water.
Be frozen solid.
Be rolled into a snowball.
Win easily.
Be electrocuted.
Pick up a fiery ghost.
Go into Kerota's house.
Collect too many birds.
Dodge the 3rd attack to the left.
Be defeated by burning.
Clear Stage 0.
Swim through the middle of some water.
Be defeated by fish-ramming.
Become a star.
Hit a spiky block.
Hit a certain block too many times.
Be defeated by a metal dish.
Drop a sprinkler in a spa.
Destroy a goal flag.
Be defeated by hot water.
Be defeated and declothed.
Clear EX mode.
Clear EX mode with no defeats!