Here is the full list of all 21 Jacob Jones and the Bigfoot Mystery : Episode 1 achievements.
Complete Episode 1
Collect all soda cans
Collect all Gnatgobblers
Reach the Airfield
Complete 'Rolling Blunder' in less than 27 moves
Earn 40000 merits
Complete 10 Puzzles
Complete 'A Note of Friendship' in less than 6 moves
Meet a Bigfoot
Survive the First Night in camp
Complete 5 puzzles
Collect 40 soda cans
Collect 3 Gnatgobblers
Earn 10000 merits
Complete 'Log Jam' in less than 12 moves
Complete your first puzzle
Earn maximum merits for Episode 1
Complete 20 puzzles
Complete 'Circuit Training' in less than 9 moves
Complete 'That Ain't Sitting Right' in less than 13 moves
Complete 'Pack Mentality' in less than 9 moves