From The TimeSplitters Wiki

Banana Chomp is a section of the TimeSplitter 2 Challenges.

Challenges

The challenges included in Banana Chomp are:

• Gone Bananas
• Monkey Business
• Playing with Fire

---

Each of these challenges are based on "Jojo the Monkey" (not a playable character) and his bananas. In Gone Bananas and Monkey Business, you must collect all of Jojo's bananas, although Monkey Business has the added challenge of avoiding zombies. Playing with Fire, however, makes Jojo the "bad guy" as he has set a Wood Golem (you) on fire, so you must get as much of his bananas as you can before you die. All these challenges take place in Aztec.
All three challenges have rather harsh time limits, and are some of the harder parts of the game. Oddly, though, Playing with Fire is the easiest challenge to get a Platinum on.
Due to Banana Chomp being centered around a Monkey, it increases the rumors of Free Radical Design's obsession with monkeys.