For this achievement you must have the Noble Map Pack DLC, get an invasion game on Breakpoint, and blow up the second territory.
Thanks to (Senior Chupon) the Premium playlist has been removed as of 12/5/11. As of now people with DLC will be paired with other people that have the same DLC and the DLC maps will come up more often. If you want to keep playing the game types here they are...
Slayer – Visit Team Slayer, Squad Slayer, and Big Team Battle, where DLC has been weighted to show up frequently.
Objective – Visit Team Objective and Big Team Battle, where DLC has been weighted to show up frequently.
Invasion – Visit the Invasion playlist, where Invasion Breakpoint has been set to show up frequently in slot one.
Now everyone must vote for invasion on breakpoint if it doesn't show up vote none of the above and hope it comes up
The team that is trying to score must first unlock the bomb by capturing the first area
This will open the bomb and all you have to do is have anyone get the bomb to the second area and have it blow up
Once the bomb blows up everyone on the team will get the achievement
I hope this is simpilar to read for anyone that was having trouble reading my last guide
IF ANYONE HAS ANY UPDATES FOR THIS ACHIEVEMENT LEAVE A COMMENT AND ILL BE GLAD TO UPDATE THIS.