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.
Complete the game without firing any firearms shot.
Collect the 10 letters from Martin Blais' treasure hunt.
Find all evidence tied to Hamilton's death.
Find all documents.
Take all pictures needed for the investigation.
Find all crossbow bolts.
Light a dark area with the lantern.
Find all talismans.
Find all campfires in the wild.
Find three talismans.
Shoot a flare at night.
Get rid of wolves without killing.
Find every house and cabin in the village.
Throw a steak at a strange creature.
Complete the game.
Complete the game without smoking any cigarettes.
Shoot the Wendigo with the rifle.
Find Hamilton's killer.
End the unfinished chess games.
Clear the boulders near the Lachances' house.
Get rid of the ice wall.
Repair the snowmobile.
Find the rifle.
Complete Réjean Blouin's vision.
Find a winter coat to keep you warm.
Complete Gilles Lachance's vision.
Send a radio message with a big antenna.
Activate the spaceship.
Complete Jean-Guy Lamothe's vision.
Complete Gisèle 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.