Good, yet flawed.
It's obvious you spent a load of time on this movie, but I still think it was a little sloppy and rushed in some places.
Graphics - Average. The backgrounds were detailed, but not necessarily pleasing to look at. The sprites you used for the luigi and shadow were nice and their animation was decent, although mixing the sprites with drawn backgrounds was slightly distracting at times. However, I know how much work that would take to draw them out yourself, so I won't penalize you for it.
Style - Pretty defined. I definitely liked the fact that you used Luigi and Shadow instead of sonic and mario. In my opinion, there was a little too much swearing going on, but you didn't over do it.
Sound - Good. Your song choices such as Back in Black and Teen Spirit are overused, but they're still great songs. The classic sfx from the mario and sonic games were nice as well.
Violence - Also good. You animated the fight scenes well for sprites. The only problem I had was the blood - it was poorly drawn.
Interactivity - Not much, although it was nice to see the "select your own ending" menu at the end.
Humor - Really not too much humor, unless you like all of the curse words. But, when Luigi said he got the lightsabre at Sears, I laughed. NJ with that :)
Overall - 7. Still and enjoyable flash movie, and as I said before, it's obvious you spent a great deal of time on it. Nice job man.