I'd like to run multiple instances of D2 Annihilus, which is possible from the launcher. However, it becomes a hassle to load launch all the instances and join a game. Has anyone have an automated way to launch client, login and select char, join game, etc.

Also, is it normal that all my instances log out after leaving the active game?

And lastly, what is the maximum number of instances can I have running at a time, anyone knows?

Thanks and happy new year.