This is an update to the Add on Steam Launch:
Go to 'Add a Game' Than select 'Add non Steam Game'. Look for 'NCLauncher2' tick mark it and 'Add Selected Programs'.
It should show like this:
Target:
"C:\Program Files (x86)\NCSOFT\NC Launcher 2\Matryoshka.exe"
Start In:
"C:\Program Files (x86)\NCSOFT\NC Launcher 2\"
Run Steam as Admin. You sould be able to play BnS now, though im still trying to figure out how to get the overlay to work now. It only show on my friend list that im playing Blade and Soul.