Talk:Mastery Rank/@comment-50.65.91.62-20130619090857/@comment-8610408-20130708012136

^ Very true. Skill kills do not count towards weapons, but they do towards Frame affinity. Also, try to get at least one kill with each weapon you are carrying in every game you play, otherwise any bonus affinity will not be given for that weapon.

^^ Only if your companions stay close enough to you. From the Affinity page:

"Enemy kills by nearby teammates will also grant affinity. This is to promote teams staying together."

This is why Rushers and Lane Soloers are the bane of our existence, since this game mechanic only encourages followers to follow more closely and not leaders to stay together. Not only are those two types of players not allowing others the direct affinity earned from scoring kills, they are also denying them the Ally Kills affinity by being too far away. There is a third thing they rob people of, too (regarding Rushers), and that is Credit reward. While you will get all the mods you picked up and the bonus reward (for completing Alert Missions with ? as a reward), you are most often denied the credit reward. (I say "most often" and not "always", since there have been times when I have gotten the credits and been almost to the end, and there have been one or two times when I am very far away and have still gotten credits. I am not sure what exactly constitutes the difference.)

This is why I mostly try to play with friends or, if my Frame is high enough, run solo. But I realize that you still have to run some pub games some times (like when Vauban's chassis is being given as a reward on a mobile defense and none of your friends are online). Then you just hope and pray that you get a decent group, and maybe make some new friends in the process. ;-)