Quite possibly the best game I have ever played.
Single player:
Although the single player is very similar to that of the past two R&C games, that does not make it bad. You have a wide variety of weapons at your disposal and can decimate your enemies in as many ways as you can imagine. The levels are nicely designed and a lot of fun to explore. The story, although not truely engaging, is humorous and will make you want to finish the game. In addition, there are a bunch of side missions and other tasks that prolong the game's life.
Multiplayer:
What can I say. When I have completely wasted many hours of my life playing this game online. Still my favorite shooter. It does everything right. It provides you with great maps, a nice weapon selection. Just the most fun I have ever had online.