About the 'That's just perfect' challenge

Get 15 kills in a match and don't die. The only perfection I've gotten in Halo was in Reach once. Perfections are not daily things. If I really tried, I might get one every few weeks. But in a day it's impossible. I hope that the dailys get more feasible to do and the weekly challenges more "weekly" and take more than 1 hour to complete.