The game looks awesome and the kills/executions look pretty great. However, did they completely do away with grabbing a merc from behind and snapping his neck? Granted it was extremely difficult to do and took some work against more skilled players, but damn it that was one of the most satisfying sounds you could hear after grabbing them and pushing that button. *cra-snap*
No matter how many times you did it, it never, ever, ever got old. And neither did the taze-instant headshot combo for mercs. Sweet sweet nostalgia.