The scene from Joss Whedon's superhero blockbuster - known as Marvel Avengers Assemble in the UK - sees Captain America (Chris Evans) and Thor (Chris Hemsworth) face against alien foes, a sequence teased in earlier trailers.
Watch the exclusive Avengers video below:
The comic book ensemble film brings together Marvel's biggest heroes - including Iron Man (Robert Downey Jr), Hulk (Mark Ruffalo), Black Widow (Scarlett Johansson) and Hawkeye (Jeremy Renner) - to fight off an invasion from Loki (Tom Hiddleston) and his alien army.
Johansson revealed at the movie's Los Angeles premiere that she experienced brutal stunt rehearsals for her role as her assassin character.
"All I can say is that I had to fight someone else in this film, and they beat the crap out of me in stunt rehearsals. I have to say I could not believe it," she said.
"I was like, 'Can you hold it back, okay? You know, I'm trying to work it out here. I've got smaller muscles than you'. I was dragged across the [floor]. When we finally finished [filming] that scene, I was just happy to be alive."
Marvel's next big movie project is the sequel to Thor, with Iron Man 3 due to follow soon after. It was announced earlier this week that Sir Ben Kingsley will play the villain in the Iron Man sequel.
The Avengers will bow in UK cinemas on April 26 and in the US on May 4.
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Photo gallery - view the latest images from The Avengers below: