Here is the full list of all 14 Snoody: One of the Ayrie achievements.
Arrive to the first planet.
Complete the game.
Find Fire rune.
Find Water rune.
Find Earth rune.
Find Air rune.
Find Lava rune.
Find Life rune.
Find Lightning rune.
Find Wave rune.
Find Dash rune.
Find Might rune.
Find Soul rune.
Die 33 times.