So Lonely At The Top

So Lonely At The Top is an Achievement in Halo Wars that is unlocked when the player has the highest score after a matchmade Skirmish game on Xbox LIVE.

It is worth 20 Gamerscore.

Strategy
One way to do this is to play a public game in either Standard or Deathmatch mode and win the game with the highest score.

The best method is to upgrade everything, take over lots of bases and build a maximum amount of units.