Here is the full list of all 11 Himno achievements worth 1,000 gamerscore. It takes around 0-0.5 hours to unlock all of the achievements on Xbox One.
Falls into the water for the first time.
Release your first Wisp.
Explore new terrain above 600 meters.
Reach district 6.
Reach level 10.
Visit 30 districts.
Do 250 dashes.
Do 500 dashes.
Do 500 jumps.
Do 1000 jumps.
Light 10 torches in one playthrough.