When Bungie was at the helm, multiplayer in the Halo games was mostly a team-oriented affair. Sure, you'd have personal stats that you could be proud of but it was the glory of a Red or Blue victory that motivated you. But, 343 Industries is making the newest Halo and things are going to be different on the multiplayer front.
A post on the Halo Waypoint blog details the shifts that will coming in the all-new Infinity Slayer mode:
For the first time in Halo, you earn points not only for your team, but also for yourself. It still takes a certain amount of kills to win the game (currently one kill equals 10 points, and 60 kills wins the game), but now you have your own personal progression loop on top of that.
Halo 4 also brings new medals and rewards to the experience, rewarding players not only for kills, but also style, assists, team support, and objective gameplay. Some of the things that count as "style" are killing an opponent attempting to hijack or skyjack a vehicle, ending an opponent's killing spree, and killing an opponent that stole your ordnance.
Our own Tina Amini played Infinity Slayer at E3 and dug the ordnance drops, power weapons and other changes that will be evident We'll see what everyone else thinks when Halo 4 drops later this year.