The 31-year-old actress says she has been hard at work for over a year along with the team to bring the Rs 140 crore film to the big screen.
"Whatever was required in the film I was able to do myself and execute in a manner that was desired. The journey of the film was huge with action sequences, 6 to 7 locations all across the globe. It was a very difficult film for me. We had a very strong team and we did everything we could," Katrina told PTI.
Katrina said the look and feel of the film does give out the impression of it being a action movie but 'Bang Bang' blossoms into a love story.
"What attracted me to the film is that along with action there is a very good storyline behind it. There is action in the film but it is basically a love story," she said.
When asked if she was open to play the lead in a female-centric action film, Katrina said since she pulled off stunts in 'Bang Bang' she could do a 'Tom Raider' or 'Kill Bill'.