you know a game is toatally BA when:

User Rating: 9 | Infected PSP
youve got zombies, duel wielding weapons, lots of blood and limbs flying everywhere, a whole mess of humor, and a department store santa who seems to have left letting children sitting on his leg go, and has taken up ripping their legs off and beeting them to death with them.
this game has all this and more, im a toatal zombie fanatic so take that into consideration, but even tho the single player is short, and i havnt even tryed out the multiplayer, i still find myself trying to unlock all the customizable avitars and getting golds on all missions. the game's difficulty level is just right for most of the missions, there still are some whose gold medal elludes me, however, i was able to finish most with a silver or above.
another redeming quality is the soundtrack, if you like scream-o, and a little techno mixed in for good measure, boy have i got good news for you!
all in all, i give this game an 8.8, because its alot of fun, without a whole lot of redeming qualities, but i can almost gerontee that you will find your self coming back to it time and time agian after you spend the 10 bucks on it (8 if its used and you have your EB edge card).