It's more of a sim. The game is not complete so combat, items and other things aren't completely implemented yet.
So you will have to wait before you can make your "deadly army of devastation"
The combine is more of a sim which translates to more of a normal (simulated) life than an action packed game. would like to point you to the link that says "rules" atop the page, it might give you a better idea of what the game is about.