Here is the full list of all 23 Nadia Was Here achievements.
Photograph 50 plants.
Photograph 30 plants.
Photograph 10 plants.
Photograph a plant.
Collect 10 shields.
Learn 24 spells.
Collect 15 weapons.
Find a pointy stick.
It takes guts to persue your dreams!
Complete the game.
Complete the entire game in 100% speed modus.
Complete the Fields of Ash sidequest.
Break the mysterious seal in the desert.
See the truth at least once.
Inflict 50 status ailments by using skills.
Dodge 100 attacks.
Heal 1000 HP using only spells.
Steal something 100 times.
Talk to people 100 times.
Really? That's your hero?
Leave the game on without any input for a full hour.
Defeat 5 blue worms.
Buy something from Wakkito's secret shop in Wakkito village.