Arena battle is back and more explosive than ever. It returns in the form of Annihilation Nation, a battle arena found early in the game. Unlike the last R&C game, there is only one battle arena to go to, but it has many more challenges than both arenas from the last game put together.
You are first told about Annihilation Nation when you need to learn about Dr. Nefarious, the evil bad guy of the game. Ratchet is told that a famous popstar is handing out prizes to those who can beat a challenge at the arena, and she might know some things about Nefarious. So, you go to the arena and attempt to beat the challenge, which is a dangerous obstacle course.
After you beat the challenge, you will be able to play other challenges after you unlock them. Eventually you will run out of challenges, so just come back later in the game and more will appear. There are 31 challenges to beat, and they consist of (in no particular order):
* The Annihilator * Cremation Station * Maze of Blaze * Championship Bout * Championship Bout II * The Other White Meat * Sleep Inducer * Chop Chop * Dodge The Twins * Cycling Weapons * More Cycling Weapons * Naptime * Time to Suck * One Hit Wonder * Counting Ducks * Ninja Challenge * Suicide Run * Pyro Playground * Crispy Critter * Hydra'n Seek * Whip it Good * Onslaught * 90 Seconds of Carnage * Two Minute Warning * Robot Rampage * The Terrible Two * Scorpio * BBQ Boulevard * Practice Challenge * Heat Street * Qwarktastic Battle (100 rounds of battle; includes boss battles)