Soo how do you use trainers without getting banned ? so far I have had 2 collector editions banned because of SINGLE PLAYER cheating (never even touched any multiplayer, only campaign). How do you grind the single player achievements without getting banned using a trainer ?
Pretty much not possible. The moment it senses you have lost connection with the server, it disables achievements. And the moment it senses the trainer running while connected to the server, it bans you.
So, you might have to go about getting the achievements the old fashioned way.