Lung's first credits include roles in the TV movie Superfire [it], the feature film Garage Days, and an appearance in the music video for the Shihad song "Comfort Me", all in 2002.

In 2003, Lung played Carmelita in the TV film Temptation; she reprised the role in the short-lived spin-off drama series The Cooks which debuted on Network Ten the following year.

Lung received her breakthrough role in the film Peaches starring alongside Jacqueline McKenzie and Hugo Weaving.

[5] Further starring roles include Dee McLachlan's film The Jammed in 2007, Christopher Smith's Triangle in 2009 and the 2012 psychological thriller Crave alongside Josh Lawson, Edward Furlong, and Ron Perlman; the film was directed by Charles de Lauzirika.

[6] She played Lola, the scheming wife of second son Marou Montebello in ABC TV's 2012 series The Straits.