TimeSplitters 2:
Amateur League > Too Hot to Handle > Disco Inferno
"Lady Jane is busy strutting her stuff in the nightclub, and the dancefloor is hotting up... literally! Avoid the night fever as long as possible!"
A reference to two songs: Disco Inferno and Night Fever.
Honorary League > Maximus > Killer Queen
A reference to the song 'Killer Queen', by Queen.
Honorary League > Maximus
The 'Maximus' set of challenges all take place in the Gladiator mode. In the film, 'Gladiator', the main character that Russell Crowe plays is called 'Maximus'.
Honorary League > Burns n' Bangs > Rocket Man
A reference to the Elton John song of the same name.
Honorary League > Outnumbered But Never Outpunned > Time to Split
The earliest use of the phrase that would be uttered so many times in Future Perfect.
Elite League > Sincerent Form of Flattery > Aztec the Dino Hunter
"Aztec Warrior just loves to hunt dinosaurs! The Aztec Priest has tried to convince him otherwise by explaining all of the ethical and ecological reasons which make it a morally questionable activity. Aztec Warrior ignores him, he says the Priest's just a cerebral bore..."
Might have already been stated, but the title is an obvious reference to Turok. However, the Cerebral Bore was also a famous weapon of the franchise:
Well, not a bad rip-off.
But "Bite my crunchy brown ass!" was clearly from "Bite my shiny metal ass!" from Bender.