Using player statistics

PlayFabClientAPI.UpdatePlayerStatistics( new UpdatePlayerStatisticsRequest {
    // request.Statistics is a list, so multiple StatisticUpdate objects can be defined if required.
    Statistics = new List<StatisticUpdate> {
        new StatisticUpdate { StatisticName = "strength", Value = 18 },
    }
},
result => { Debug.Log("User statistics updated"); },
error => { Debug.LogError(error.GenerateErrorReport()); });

void GetStatistics()
{
    PlayFabClientAPI.GetPlayerStatistics(
        new GetPlayerStatisticsRequest(),
        OnGetStatistics,
        error => Debug.LogError(error.GenerateErrorReport())
    );
}

void OnGetStatistics(GetPlayerStatisticsResult result)
{
    Debug.Log("Received the following Statistics:");
    foreach (var eachStat in result.Statistics)
        Debug.Log("Statistic (" + eachStat.StatisticName + "): " + eachStat.Value);
}