Here is the full list of all 30 On My Own achievements.
Craft every item in the game
Eat every edible food in the game
Complete all journal entries for the Alpine Tundra Biome
Equip the bear jacket
Reached the summit of the Mountain Biome, completing the game
Equip Jacket, Hat, and Backpack Upgrade
Encounter/survive an avalanche
Complete all journal entries for the Woodland Lake Biome
Survived a bear attack/encounter
Chop 200 trees down
Catch 5 Fish
Kill 5 foxes
Travel to all 4 biomes
Travel to 3 biomes
Equip a fox skin hat
Complete all journal entries for the Woodland Biome
Create a fire without matches or coals
Survive through all 4 seasons
Kill 5 animals with a bow
Craft a bundle bow
Catch 5 animals in snares or traps
Travel to the winter world
Travel to a different camp
Forge food from an edible plant
Start a fire to stay warm during the night
Find a secret letter
Craft an item to aid in survival
Chop down a tree