Insomniac takes the fps to the next level with plenty of weapons to carry, but lacks game modes.
Since Resistance is made by Insomniac games, there are going to be a wide variety of weapons, both chimeran and human, each with an alternate fire. Like the Bullseye, the main chimeran weapon, has an ability to shoot a homing device that would cause every shot you take to go straight to the homing device. Or like the Rossmore, a powerful shotgun, than gives you a choice of shooting 1 or 2 shells at once. As you progress in the game you may also come across turrets you could be in or getting into a tank while coming across different kinds of chimeran. You could also find documents that explain more about the chimeran. Unfortunately, there wasnt much personality shown in the characters as we hoped.
And yes, there is a co-op mode that allows you to go through the story with a friend. There is also a multiplayer mode that allows you to play on or offline against or with friends. Online, you can play with up to 40 people, wich can make very challenging matches.
Resistance Fall of Man, overall, is a very good game and recommended to all PS3 owners who like first person shooters.