 Unable to enter Cortex 's castle after getting there via bridge , Crash climbs the tower walls , and enters the castle through the window he had previously escaped from . After making his way through the dark hallways and the Castle 's many machines , Crash is confronted by Brio inside his laboratory . Brio uses chemicals to mutate himself into a monster . While Crash is successful in defeating Brio , the castle laboratory catches chemical fire during the struggle . Crash escapes to Cortex 's airship , where he confronts Cortex himself as the castle burns . Cortex attacks him with a plasma gun , but Crash deflects his own projectiles against him and sends Cortex falling out of the air . United with Tawna , they escape the burning castle on Cortex 's airship . 
