See notes for GetAchievementAndUnlockTime above
public static bool GetUserAchievementAndUnlockTime(CSteamID steamIDUser, string pchName, out bool pbAchieved, out uint punUnlockTime) { InteropHelp.TestIfAvailableClient(); using (var pchName2 = new InteropHelp.UTF8StringHandle(pchName)) { return NativeMethods.ISteamUserStats_GetUserAchievementAndUnlockTime(steamIDUser, pchName2, out pbAchieved, out punUnlockTime); } }