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