Personally I wouldn't skip out on R2 because it really is a great game shadowed only by the fact that K2 is so close.The CO-OP is great fun. In fact I'd go so far as to say it's the funnest online gaming experiance I've had on a console this gen since COD4 if not even greater then it. This could also be because my girlfriend plays co-op with me everytime so I don't ever play alone though. Overall I'll rate R2 for you based on my opinions.

R2:

Story: 6

The truth be said, the story in R2 seems very rushed. The game seems more focused on action and little on the story that pieces those action scenes together. I believe they were trying to copy Gears of War in this manner but it didn't even really work for that game either truth be told. Also, much of the story seems better placed to set up a third installment then to work out an identity for itself. That being said, it has a huge cliffhanger ending that is amazing and could send the third installment in so many increadible ways storyline wise as long as they actually focus on the story in the third resistance. But yea, the ending is the most shocking ending to a game in a long time for me.

Replay Value: 10

This game offers A lot of replay value in my opinion. There are unlockables and collectibles for the main campaign. Including multiple difficutly settings that range from easy, medium, normal, hard, and superhuman and also an unlockable arcade mode. In addition it has 60 player online competitive matches where you unlock lots and lots of costumes and beserks by leveling up. They have some really cool costumes too by the way. Not to mention the online modes are great fun. In addition there is the amazing 8 player CO-OP with unlockable accessories and weapons and it doesn't ever really get old as the levels scale according to the players and the maps are somewhat randomized. In addition to all this the game keeps track of your rank according to performance in all three modes and the game features full trophy support.

Gameplay: 9

The game does little to distinguish itself from many other FPS's control wise. In fact it seems to copy them. It seems like a mix between Call of Duty and Halo if you can picture it. As those games both seem and are so far apart. The configuration is a lot like COD4, but the mechanics and the way the characters act are more like Halo. The guns and beserks however are how the game gets it's identity. The weapons to choose from are very unique and with the additions of alternate fire it's hard to find this much fun shooting a weapon. The auger for instance can shoot through walls and has an alternate fire that puts up a force field in front of you for a limited amount of time and is a personal favorite of mine. In addition to the guns, there are beserks. You obtain points by shooting enemies, killing enemies, meeting objectives, capturing nodes, etc. and these points fill up a meter which can then by activated when full. You can choose from one of many beserks which can half all damage dealt to you, give you a missle launcher to use for two shots, damage enemies with lightning, allow you and teammates to see through walls, make you invisible when not firing or being shot at, and many others. It is these guns and beserks which make the game so much fun to play. With these tools you are given so much ground to work with and play around. For instance you will have to find ways to get around someone's shield, or to find an invisible enemy, or which way best to attack someone who is taking half damage. Is it best to wait until the beserk is no longer activated? Attack from behind? Wait until someone else attacks him? It's a very different kind of game ultimately then many other shooters because of these factors and because of this can keep from feeling stale when the controls themselves bring little to the table.

Graphics- 8

The graphics are nice but in no way the greatest. There are some graphical flaws and hiccups but nothing major. However, some parts of the game look amazing. The game has many parts with great tecture work that reaches uncharted levels but you'll also find many places with some of the blandest textures you'll find. This is due to the size of the game. The single player is huge. The battlegrounds are huge, the enemies are huge, everything screams epic scale.  Personally, I found parts of the game that wowed me visually and other that made me go, that's really sad how poor that looks. Overall, because of the scale of the world, I forgave this and mostly remembered the increadible looking parts.