I highly recommend anyone who likes first person shooters to pick this up. Single player is fun and a great way to learn the controls, Arcade is ok, but the multiplayer is amazing. There are only a couple things I would knock it down for
A voice chat system would of been nice, even if it was just for talking with your own team for team deathmatch and capture the flag. The method of pressing the 1 button and then using the control pad to pick what you want to say to your team is pretty unpractical, especially because you cannot move while doing so. Nevertheless, the online play is still extremely fun.
Splitscreen multiplayer would have been nice as well. It is a bummer that 2 people in the same room cannot play together unless there are 2 tvs and 2 wiis.
As far as lasting value goes, had this game had voice chat and split screen multiplayer, and maybe even the option for 2 people to go online from Wii, it would have easily been a 10.
I still highly recommend purchasing it!