Most people might disregard the art of adapting superhero films to the big screen. In recent years the Marvel Cinematic Universe has become vast and making movies within the franchise will only become more difficult, and even more so when you're dealing with the Avengers.

Joss Whedon took on this ambitious task in the first movie, and has come back to the sequel with even more on his plate. In a recent interview with SFX magazine, the director speaks on his challenges and what made it so far.

Whedon states:

"Shoot me in the face! It is a nightmare. I long for the simple movies like Serenity! This is the hardest juggling act I have ever, ever tried to pull off."

He also talks about why the characters were all so hard to adapt.

"They're very disparate characters. The joy of the Avengers is they really don't belong in the same room. It's not like the X-Men who are all tortured by the same thing and have similar costumes. These guys are just all over the place. And so it's tough. Honestly, this is as tough as anything I've ever done, and I haven't worked this hard since I had three shows on the air."

"There is more Hulk in this movie than there was in the last first [sic]. But what I'm excited about is we shot this movie very differently. I was running a lot of cameras, I was shooting long lenses, which I don't usually do."

Whedon then went into detail on how he treated the Hulk in this movie, as he stated that he'll appear a lot more than he did in the first.

"What I love is we have the opportunity, because we went in with this mission statement, to shoot the Hulk like a character in a movie, and not like a 'Look what we've got!' We have 'overs' - blurry 'Hulk's over there! Bits, very quick shots. Everything isn't 'We built the Hulk so for God's sake you're going to watch him in this long take, full frame, the whole time!' We really got to make him one of the characters in the movie. And that was a gift."