public static bool GetAchievementAchievedPercent(string pchName, out float pflPercent) {
InteropHelp.TestIfAvailableClient();
using (var pchName2 = new InteropHelp.UTF8StringHandle(pchName)) {
return NativeMethods.ISteamUserStats_GetAchievementAchievedPercent(pchName2, out pflPercent);
}
}