Didn't care about the Mileena alt, but I wanted to finish it just to get the achievements. I beat it a few days after the game was out. Didn't skip any. I did it with Stryker. Only Mileena was challenging. Stryker full screen b,f+1 spam eats Shao Kahn alive. It completely nullifies his spear throw and you just jump over his hammer throw. Repeat over and over until he's dead.