Well, there are many ways to get brutalities. The krypt, towers of time or even to buy it in the shop. Has you discovered a brutality which is someone cool or classic? I can say that Liu Kang has his MK3 Arcade Drop but also a MK1 classic fatality. And Jax has a pretty brutal fatality where he shots the victim in his face..

Oh, does anyone know if the personal tower offers also brutalities above level 3? Because if you finish a level two tower you get one.