This is a score attack game with bonus points for blowing stuff off the screen and keeping that kill streak going. (illgaming.net)
With an unrivalled multiplayer component which combines adrenaline fuelled gunplay and destructive kill streak rewards which is improved further still with the inclusion of the new Strike Package and Weapons Proficiency systems that allow gamers greater freedom than ever before when customizing their class to their playstyle.Additionally the Call of Duty Elite ® service means that players will be able to interact competitively and socially as never before. (electronicfirst.com)
Perks were basically removed completely, and had instead been morphed into a strange kind of Kill Streak [sic]. (egmnow.com)