Here is the full list of all 12 Aveliana achievements.
Finished the game!
You've learnt the basics!
A true Aveliana lover!
Activated a shrine!
Stayed hidden for a long time!
Not taken damages for a long moment!
300 dust collected!
Found your first hidden spirit!
All abilities unlocked!
Beat the first boss!
Beat the second boss!
Beat the third boss!