The most unique and compelling feature of this game is the ability to destroy almost everything in the game world. And you can do this in a lot of ways - by crushing with your powerful sledgehammer or any type of transport, by shooting, by blowing up a charge or a chemical cistern and so on.
Story
The story of Red Faction series is tied around the freedom fights of human colonists on Mars against an oppressive rule of Earth-based corporation - the plot line often used in Mars fiction. In the first game of the series - Red Faction set in 2075, 50 years before Guerrilla - Mars was liberated from the oppressive rule of Ultor corporation by revolutionary Martian miners (called "Red Faction") and its leader Parker (you can visit him as an old man next to his shack near a mohole in Badlands sector of Guerrilla). The allies of those fights - Earth Defense Force (EDF) - in last 50 years has become as ruthless as Ultor had been, for the interests of Earth's corporations pressing Martian society into forced labor. No wonder the Red Faction is revived. Unlike as in the original game where in open areas you should walk in a pressure suit, in Guerrilla the Mars is terraformed to the stage you can breath freely.