EARS (yeah, it doesn't like that acronym either) began development of the game's online component knowing that it wanted it to be influenced by single player, and vice-versa. So, for starters, you can't play multiplayer until you've recruited at least one soldier in single player. That character can then be used online, leveled up, and will retain his "upgrades" in the single-player game.
We played as a character who was proficient at every skill, which felt like one part cheating, one part gloating.
It's possible to bring any of your single-player soldiers into multiplayer, which is handy if one is already better suited for the task at hand. You can also decide to focus on one guy and spend all of your earnings leveling him up. For example, we played as a character who was proficient at every skill, which felt like one part cheating, one part gloating.
Assault proved to be the most challenging mode we played. The map we played on was a good example of the other five planned for the final game: symmetrical and featuring various shortcuts to either blast or cut (fences) your way through. In this case, each team had to defend demolition points inside their respective warehouses. If one got taken out, another was highlighted on the map.
Finally there was, of course, straight-up 16-player team deathmatch. Complete with executions. Yes, similar to the curb stomps (and other such nastiness) in Gears of War 2, The Godfather II sports killing moves specific to each weapon. In order to pull one of, you need to get your enemy into a weakened, dropped-to-their-knees state. The cruelest we saw pulled off was a shotgun in the mouth. Did we mention the game's rated "M" (for "Mature," not "Mafia")?