From The TimeSplitters Wiki

Get down! -to work! Big Top Blowout has been given the Improvement Badge, Please contribute to this article!

Big Top Blowout is an Arcade Leauge mission in TimeSplitters 2 where chaos was caused at the circus when Stumpy shoves a tent pike up Mister Giggles' nose and Mischief breaks open a crate of Homing Launchers and everybody started to kill eachother. It is a very hard mission.