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