I dunno if this is the fastest way, but if you have enough health regen and armor, find a low level bandit with a one hander. Â He'll be weak enough that with your shield up, he won't be able to kill you, ever. Â Put up your shield and put yourself in a corner so he can't flank you. Â Put something on the block button. Â Go do errands, go to sleep, go do something else for a few hours. Â Set it up before going to work. Â Come home at level 100 block. Â It might not be fast, but it can be done while you're away from your PC/Console.