What Counts? All scores that pop up in the center of the screen (kills, assists, C/UAV assists, kills from lethal score streaks, objective play, and support play). What Doesn't? Medals like Head Shots, Avengers, Revenge, etc. Hardline A 20% bonus is awarded for each score earned. Not every score event receives the boost though. Some of these include assists from support streaks like UAV, CUAV, and Orbital VSAT. It also appears that the kills earned from lethal kill streaks don't count also. There's been some confusion about Hardline works (including myself) and that it reduces the score requirement for score streaks by 20%. I've included two videos which supports that Hardline affects the score earned. Driftor: http://www.youtube.com/watch?v=8YPhMx39P3g Raging Amish: http://www.youtube.com/watch?v=OobiZ9KAYfg Resetting and After Life Kills/Assists Dying will reset your score streak. Depending on how fast you re-spawn, score earned from after life kills or assists will count towards your new streak. (including those obtained from score streaks) Stacking Assists and kills from score streaks count toward your score streak. Round Based Modes: Score streaks carry over into the next round. Capture The Flag Demolition Domination Free For All Hard Point Head Quarters Kill Confirmed Multi/Team Death Match Search and Destroy Score Streak Chart UAV - Lightning Strike Sentry Gun - EMP Systems Warthog - Swarm Closing I'll try to keep this up to date if changes are made.