The best 2009 game
What i really like about this game is that you don't spend lots of time gathering resources, building your base, or don't have enough resources to build an army because you use it all bulding your base. Also it's more realistic because the time where really large armies fought against really large armies in open field ended in the medieval age, and now (and i think in the future) the battles are in places like cites where you must use cover.
And about the tactics you must know what use in what situations like when you're attacking a space marine base you ca be sure they have at least a dreadnought so you must bring anti-vehicle weaponry like a bright lance.