From The TimeSplitters Wiki

Nightclub
Size	Large
Location	Big Tony's Sunrise Club, Chicago
Climate	Rain
Unlockable	TS2 > Arcade League > Disco Inferno with a Bronze Medal or higher
Recommended Bots
Recommended Weapons

The Nightclub is a small slice of the Chicago map, namely Big Tony's Sunrise Club. In this version however, the Sunrise Club is fully explorable, with the doors upstairs open and with the ability to break the windows to go outside.