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Sorry Naisy, NO. It's not fun AT ALL. The action scenes--if you want to call them that--aren't exciting, the characters are all flat and one-dimensional, and there is not a single moment of humor in the entire movie.
If you just want to see a good 3-D movie, this still isn't going to entertain you. It was shot in 2-D and just converted to 3-D to make more money. There is nothing special or noteworthy about the 3-D. In fact, it loses something in 3-D for me because it looks really dark and grimy. Even in scenes set in broad daylight with snow covering the entire background, it's still too dark.
As for the story line, it sucks. Sorry, but that's the truth. To be fair, the last twenty minutes or so picks up, so if you can muster the strength to sit through an hour and twenty minutes of horrendous film-making then you'll be rewarded with a pretty strong finish.
Just my opinions, some people may have actually liked it--though I've heard from literally none of these people.
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"I want a film I watch to express either the joy of making cinema or the anguish of making cinema" -Francois Truffaut