Talk:Challenge Reward/@comment-24035110-20140329191008/@comment-71.231.199.61-20140428021515

It seems like it but no.

Each kill gives you a Stack towards hitting three kills within ten seconds.

So if you acquired a stack at 0 seconds, another stack at 3, a stack at 11, and a stack at 13, you wouldnt complete the challenge until the last kill, the first kill "Expired"