I watched the trailer and all I see is a mash up of other games. Halo, Resistance, any other FPS with aliens invading...
Not a bad thing, especially if it plays well. Its just like they went through a series of games and said 'What do we like in this game?'. The big question is what seperates it from other games other than being on the Wii? The same question was asked of the first one, and it didn't answer very well.
Not sure if I like the enemies flashing when hit. I don't mind an indicator showing my shot was good, but a whole body flash? Just rip the idea of shields and have the shields sparkle when hit until dead. OR, better yet, a splatter of blood with each bullet with the appropriate wet sound effect.