Hello guys!
Finally I learned and managed to implement the achievements of Google Play Games for Android. Lots of hours on Android Studio and google sites (Android Developers and Google Play console). But I finally did it. 

Now we just need to organize the trailer!
I believe the release will be this weekend! ^^

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Olá pessoal!
Finalmente aprendi e consegui implementar as conquistas do Google Play Games para Android. Muitas horas no Android Studio e nos sites da google(Android Developers e Google Play console).

Agora falta apenas organizar o trailer! 
Acredito que o lançamento será esse fim de semana! ^^