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