Red Faction: Guerrilla has an excuse plot that proceeds to:

1. Kill your brother.
   
2. Get you attacked by the evil corporation.
   
3. Forces you to join the titular Red Faction.
   
4. All within the first couple of minutes of gameplay.

It gets over with the plot basics as soon as possible to let you go and blow everything up. It's almost comical how much they don't care about the story.

At first it's pretty boring. No radio (there are a few moody ambient tracks, but they're too quiet), you're driving around plain locations in your brown vehicle, and destroy grey buildings housing soldiers in brown uniforms. It can take several hours to get to the good parts, i.e. activities where you pilot a mech to destroy things, drive a tank to destroy things, ride shotgun to destroy things, and unlock the Nano Rifle.
RF:G has absolutely exceptional environmental destruction. You can blow up support columns to destroy a building and force it to collapse on itself, thus saving on explosives, or just drive through it with a massive vehicle. The Nano Rifle melts not only enemies or vehicles, it also disintegrates walls and the mentioned columns, making the destruction even more fun and strategic, as you can e.g., collapse a huge bridge by smartly targeting the metal support beams underneath it. This is the only reason this game is so well liked.

Overall, it's just a nice time waster when you have nothing else better to do. DLC is more of the same and I didn't bother finishing it.

Open world action done right.

Plenty of variation if you dont just want a FPS