Fun game, but certainly not better than the predecessors.
Last Stand is where I spent most of my time in this installment, that and 2v2s, however the multiplayer revolves too much around rock, paper, scissor units, which for some players works however for those of us who are familiar with the table top game this is insulting. Tactical Marines in the table top are a jack of all trades, master of none, however their role respectively in this RTS varries from what us hobbyists are familiar with. In addition to this the multiplayer is unforgiving, much like Star Craft-II, you will more than likely be paired against players of unrelated skill level to your own and be deterred from player multiplayer for any length of time.