this chievo required that you playing the game mode team leader.
YOU must being the team leader and requires to win the matches as team leader 20 times
pretty simple to boost at killhouse - normal xbox match with least of 6 players - its harder to find six players :-)
every map are usable. winning team (team 1 is going for popup) doing nothing, losing team going suicide (using HE grenade. after popup at all members of the winning team switching the wins and same thing...
congrats - pretty fast popup