Alright, well this is probably the best wii shooter if not wii game out there. It builds up from the first games story and it gets REALLY interesting.
As we know, the first game looked REALLY good, Nice soud effects (although voice acting maby couldv bin a little better) and felt good too, and it had a nice little online multiplayer which there arnt many of in wii shooters. But this one includes all the things from the last game but better, and even has more things that wernt in the last one.
Multiplayer-
Now, apart from online play is split-screen, You can play up to 4 players on the same console in all the modes available online (Deathmach, CTF,etc.) and even a survivel mod where u play co-op to survive against waves of enemies, each wave harder. MANY maps for all the multiplayer modes (online & Split-screen) to choose from.
And also dont forget the customization!! As you play online or even the story mode, you will get money to buy weapons (many more added since first game) , gear, and a larg variety of cosmetics! Than after you done buying your stuff, its just to edit one (or more) of you 4 loadouts that you can swich between in-game with the stuff you bought.
There is even a nice system, that after maches, you gain xp for what youv done, and than can lvl up!
Singleplayer-
Now this continues right of were the first game left of, Ive got to say it is pretty short, but while it lasts it is pretty fun.
They even added really nice boss battles at the end of most stages!! There are a ton of new weopones for use in single player and multiplayer, my favorit is the phase rifle, Its a energy, sniper rifle that when using the scope you can see targets that are behind walls, and if you have them in the scope long enough for it to lock on, it will phase through the wall and hit the target, with a high percent chance of one shot, one kill.
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Well, thats what Ive got to say so all in all if you have a wii, and like shooters, GET THIS!!