Nepeo
Thanks, buddy. I'm about to test it indeed.
Would you know how to identify the index of each achievement in play console?
edit: I also have question about the frequency of requests. In my game, I can score in a frequency of up to 1 second or so. My question is if I can save it, submit the score, check and unlock achievement(if is the case) so often. Right now I'm doing it only when the game ends but, every time the player scores, I'm sending a message saying he unlocked a new item or an achievement. Although, If happens something between this moment and the game over (It's an endless game), like crashes or no internet connection, It won't count. The game will be saved because It's saved locally right away and further synced to google's servers, but the score submission and the achievement unlocked won't count. So the player will have an incompatibility situation which the score required is enough but he won't have the achievements matched.