There's lots of brutal executions you can do, both with your wristblades sheathed and unsheathed. Whats your favorite? (Wish I could post pics, but can't find any)
Wristblades:
Swipe head off
Stab into neck and rip skull out
Grab leg and slice body in half
Hands:
Grab head and make it go pop
Grab body, snap bones and finally rip body in half
Classic kills!