Can't get enough Avengers? If so, Marvel's recent YouTube activity will have you happy. The company has officially released the second trailer for The Avengers: Age of Ultron, and with it comes a very somber mood with additional looks at the upcoming show. There's 1:40 minutes of footage, and it seems more tailored toward tweaking the viewer's emotions rather than presenting any big new look at the movie and its story. As always, we have the trailer available after the jump!