11 is very good! 3 of the points have an element of luck involved, so even if you get the 9 other points, you have a 1 in 6 chance of getting the other 3.
I never got 12 while testing. Once I got 11 while testing the path where Edmund doesn't summon the former apprentices from their graves. So I got all 3 Luck points, proving it is possible.
Thanks for playing and commenting. I've started a sequel, Manticore Hunter. No luck points at all in this, the points will be from finding beasts and using spells.