You play in Venezuela, and the field of play is gigantic. But don't let this fool you. There is not much that you can really do mission-wise, so the size of the game area doesn't really matter. Now, once you get past the boring missions, you'll go out and start just destroying stuff because it's there. But, if you really want to try to get to the end of the game, this isn't the way to go. And, you will get penalized for killing civilians and if you miss, well, you can piss off a whole gang and have them come after you. You will be taking jobs from these gangs too, so it's not a good idea to make them mad, as no more work will come from them if they are irrirated with you. Another down side to the massive map, it will literally take you the longest time in the world to get where you need to go, as your missions will never be close to each others. The map is hard to decipher as well, it's blurry and hard to find where you are and where you are trying to go. So, the huge game area is a downside in the end.
Basically, for a mercenary that is trying to take out their revenge on a bad boss, well, you don't really have a lot of freedom in doing it. And, the vast majority of the quests that the gangs give you are like escort quests, or they have you fetching something, which is boring and doesn't allow you to shoot much of anything at all. Now, doing these quests will earn you money and sometimes will be part of the story line overall - so it's not to say that you shouldn't do them. And, if you try to kill or capture some of the high profile targets, it ends up backfiring on you more often than not. I mean, if you are a mercenary, you see someone that a gang you know wants - you kill them or capture them right? Well, this means that the other gangs will be mad and try to kill you and the soldiers that are friendly to you will also suddenly be ready to kill you off too.
We probably should talk about the enemy that you'll be fighting, but it doesn't really matter much. Basically, what you need to know is that the enemies are too easy most of the time. The computer AI is so bad, that is doesn't matter. If you get hurt, all you have to do is hide somewhere. The enemy chasing you won't look for you. Most of the time, you can walk right up to them and they won't even fire on you... I mean, come on... At least try to shoot me!
There is just so much wrong with this game overall, that I can't even begin to start scratching the surface of it all.