Warhammer 40,000: Dawn of War II
73 Achievements
2,000
Xbox 360
Domination
Hold 5+ victory points at once in an online Free for All in Chaos Rising.
25
How to unlock the Domination achievement in Warhammer 40,000: Dawn of War II - Definitive Guide
This one is very hard to get without boosting, but thankfully its easily boosted. What you have to do is go into a public Free For All match and hold 5 victory points at once. There are 7 on each FFA map but with 5 other players its a tough achievement.
However much like King of the Hill you only need one other player to set up a matched and boost so this is probably your best bet.