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