It has a bit of a learning curve, primarily due to a woeful tutorial.
However, the game is pretty fun. I like the premise of an A-symetrical game (The computer is waaay more powerful, so u have to attack gurilla style).
And Co-op seems to be more satisfying than skirmish multiplayer from other games, where someone has to be the loser (as opposed to everyone losing, and u can commiserate together).
Every major patch has significantly changed the game. I Havent tried the new version to see how things are now.