Here is the full list of all 35 Kona achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Collect the 10 letters from Martin Blais' treasure hunt.
Take all pictures needed for the investigation.
Send a radio message with a big antenna.
Clear the boulders near the Lachances' house.
Find all talismans.
Find all campfires in the wild.
Find three talismans.
Shoot a flare at night.
Find all crossbow bolts.
Complete the game without using vehicles (past the Store).
Complete the game without drinking any alcohol.
Complete the game without firing any firearms shot.
Throw a steak at a strange creature.
Light a dark area with the lantern.
In typical Canadian fashion, Carl left $10 for the cutoff chain.
Complete the game.
Complete the game without smoking any cigarettes.
Shoot the Wendigo with the rifle.
Find all evidence tied to Hamilton's death.
Find Hamilton's killer.
End the unfinished chess games.
Find every house and cabin in the village.
Find all documents.
Get rid of the ice wall.
Find the rifle.
Complete Réjean Blouin's vision.
Find a winter coat to keep you warm.
Repair the snowmobile.
Get rid of wolves without killing.
Activate the spaceship.
Complete Jean-Guy Lamothe's vision.
Complete Gisèle Lachance's vision.
Complete Gilles Lachance's vision.
Take a picture needed for the investigation.
Reach the General Store.