You really want my opinion on this well here it goes I'm not going to lie about it playing the campaign felt like it was short I think this needs to be more and playing zombie going to portals the portals I like that but yes there is a butt the minute that you beating most of the portals and you don't have that energy to beat that last one but you were so close the minute they have zombies coming after you when you get ready to load your gun and you died and you had to start all over again now that I don't like so if I had to rate this I give it a one star