1 assassination I would like to have in the game is inspired by The Dark Knight Rises, breaking your enemy’s back like how Bane breaks Batman’s back. http://camelbach.files.wordpress.com/2012/07/breakingthebat.gif You obviously wouldn’t raise them up into the air, but breaking their back would seem brutal and kick–Yoink-. Sorry if I’ve spoiled a plot point for you if you haven’t seen it yet.
That would be a cool assassination. I think a funny assassination would be something from Saints Row 3, particularly when you kick someone in the groin from behind so hard they do a back flip. I know 343 wouldn’t put something like that in Halo 4 but it would be amazing if they did. Just imagine it, you’re sniping, just chilling when someone assassinates you; but instead of stabbing you in the face he just kicks you right between the legs and your spartan just flies like, 10 feet in the air, does a backflip, hits the ground, and dies. That would be hilarious.
I liked the tickle-your-belly assassination, with the sword, in Reach. They should add more sword assassinations like stabbing the Spartan through the head(one side of the blade) and neck(the other side of the blade). That would be brutal.