Here is the full list of all 16 SEASON: A letter to the future achievements.
Witness the end of a season.
Exit the Valley before the flood enters it.
Arrive at the Shrine.
Follow a little kid on a bike tour of the valley.
Help Sophon pack the last of her things.
Uncover some kind of secret romance.
Begin your political education.
Listen to your friend's weird but meaningful dream.
Capture Tieng Valley in a moment.
Find a hidden botanical voice.
Encounter a stranger and have a pleasant interaction.
See the outside world before it's gone.
Completely customize a page in your journal.
A journey of a thousand seasons begins with a single step.
Leave a mark on Tieng Valley.
Play a herd of cows their favorite genre of music.