The Halo Bulletin
Infinity Slayer is Halo 4’s all-new Team Slayer experience. It is an additional-but-vital mode, with new weapons, vehicles, loadouts and Armor Abilities. The UNSC Infinity takes a large role in this mode, providing players in the game with weapons and ordnance.
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 ten 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.
Halo 4 features the new scoring system in all modes, but it makes its biggest impact in Infinity Slayer as players earn ordnance rewards from the UNSC Infinity.
Infinity Ordnance - During each Infinity Slayer experience, the UNSC Infinity drops ordnance at the start of the match. So, what used to be a shotgun leaning against the wall in previous Halos is now dropped from Infinity. At carefully-tuned intervals, Infinity resupplies the map with power weapons.
Personal Ordnance - As you earn medals, you fill up your ordnance meter. When that meter is full, you earn a reward drop for yourself from the Infinity. The reward comes in the form of three randomized power weapons, grenades, or powerups (two of the former, one of the latter). You can then choose which one you want, and the Infinity will drop the ordnance (if you’re inside, it will teleport in). You won’t get the highest tier power weapons (e.g., rockets) in personal ordnance, but everything you do get is powerfully awesome. And awesomely powerful. And everything in between.
http://halo.xbox.com/blogs/Headlines/post/2012/07/06/The-Halo-Bulletin-7612.aspx
