So I am trying to get star 69 acheivment and i need some help with all the echo missons, the two where you must have two players and two in charlie. Add me with a message and we could play when we are both on so no worries about doing it fast
just got the achievement myself but i'll help. 2 of the echo missions are VERY easy by yourself (high explosive and armor piercing). wetwork isn't bad with two people.