Here is the full list of all 11 Himno achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Release 25 Wisps.
Do 2500 dashes.
Do 5000 jumps.
Reach level 19.
Explore new terrain above 600 meters.
Release your first Wisp.
Falls into the water for the first time.
Light 30 torches in one playthrough.
Visit 100 districts.
Use 15 dash runes.
Reach district 11.