Are you playing the single player or the multiplayer stuff?
I slowly played through the main plot of the single player. There are still minor side missions and stuff to do there, but mostly I spend my time playing online multiplayer. There is no plot and no point other than fun. Unfortunately, like most sandbox games, some people think its more about showing their wiener size than having fun, and just go around killing everyone with tanks. So, for that reason, I only play with friends in multiplayer.
Author