Here is the full list of all 28 PictoPull achievements.
Complete all the forest puzzles
Complete all the city puzzles
Complete all the Sewer puzzles
Complete all the Island puzzles
Complete all of the Mountain puzzles
Complete all of the cave puzzles
Complete all of the lab puzzles
Complete your first puzzle
Complete 10 puzzles
Complete 100 puzzles
Complete 200 puzzles
Create a custom level and beat it
Upload a custom level to the workshop
Complete all of the void puzzles
Complete all of the Construction Site puzzles
Complete all of the Village levels
Complete 50 puzzles
Complete all achievements
Find the village beet
Find the island beet
Find the forest beet
Find the cave beet
Find the sewer beet
Find the city beet
Find the construction site beet
Find the mountain beet
Find the lab beet
Find the void beet