I was just playing my Ratchet and Clank : up your arsenal, and i was at the annihilation nation. And i came upon one challenge called Qwarktastic battle, and i went for it. Now the first thing i saw was how many rounds there were: 100. I was like OMG!! 100! You've got to be kiddin me. I continued and they threw everthing at me: turrents, lombax nock-out gas, weapon switches, everything. And finnally i get to like round 91, or something like that, and I DIE! I DIE! I couldn't BIELEVE IT! well im past it now..... so i'll just try again tomarow. :D