Here is the full list of all 26 Shape of the World achievements.
Walk a total of 50,000m
Fly 600m before touching down
Fly 300m before touching down
Complete the game three times
Complete the game a second time
Do a slow complete playthrough of the game
Launch toward 15 different cave pots
Walk a total of 30,000m
Touch all Rainforest monuments
Urchin Jump !
Collect all 28 seeds
Fly 150m before touching down
Collect 3/4 of the seeds
Plant 1,000 trees
Walk a total of 15,000m
Take a side route through the swamp cave
Find an unmarked monument near the shore
Collect half of the seeds
Destroy 500 trees
Walk a total of 7,500m
Complete the game
Do a fast complete playthrough of the game
Touch all Mountain monuments
Collect 7 seeds
Plant 100 trees
Destroy 50 trees