Here is the full list of all 17 Sophie Demo achievements.
Encontrou o velho no Parque dos Carvalhos
Encontrou o livro com a lenda do homem-pássaro
Chegou nas Montanhas do Feiticeiro
Pegou a primeira espada
Encontrou o Homem-Pássaro
Solucionou o puzzle
Found a legendary item
Terminou a demo
Completed all constellations from Sophie
Completou a Constelação da Bruxa
Cast your first spell
Found all available spells
Got the Mask of Truth
Defeated the Spirit of the Forest in the Masked Forest
Met Abrakadabra
Completed Juan's side quest
Complete the demo (including the Masked Forest level)