It's been said that Zack Snyder's films have gory, fun, video game-like action, but no heart. This is mostly true of Dawn of the Dead.
If there's one thing Zach Snyder can direct, it's action. It might not be the most clever or imaginative action, but it's still fun nonetheless.
All in all, however, the film comes off as being somewhat shallow. The characters don't seem to have truly won or lost anything by the film's end, and one wonders what the purpose of the story actually was. There's not enough action for it to be completely enjoyable on an adrenaline-fueled level, there's not enough character for it to be compelling, and there's not enough scares for it to be very thrilling. What's left is an adequate but ultimately non-essential film.
But shooting zombies in the face is still awesome, so it gets a 6.