It's very bad and horribly unoriginal.
First, you used the same music as the Nightmare City flash movie. It fit well for that, because it was cool and original. Not so in yours.
Your graphics were poor. The character had a shit walk cycle, and you can barely use motion tweens correctly. You shading sucked, and you can't draw backgrounds to save yur life.
Not only was the music a rip off, the entire concept of fucking up Sandbag over a speed metal song has been done. It's called "The Beat-Up Sandbag Collab", and it makes your stupid movie look like something I push out of my ass in the morning.
If you actually had a character with limbs, it may have been decent, but in a shitty attempt to cross anime with madness, you have succeeded in making a steaming pile of shit.
Not only that, Sandbag looked like a fucking tampon. If it wasn't bad enough that you just suck at art, you completely bastardized the one identifiable part of the movie that isn't even that hard to fuck up.
I only gave you a 2 because I know that it'll pass and I feel like getting points from it. I wish NG would stop mollycoddling all the fucking newbies and fucking blammed shit for not being high enough quality, ex. Your movie.
Work harder next time, this must have taken you a week at the most.
- Radioactive24