Good, but not great
Graphics:
Very good graphics. I am very impressed by your scenerys and all the detail in every drawing. Also the frame by frame animation in the fights are very good. I miss there body shadings, and the headcharacter was a bit pale. Could have been taken from any jap Anime series. And that's the problem; Your artwork is good, but it's obvious how just have copied other peoples styles in drawing manga, without any signifcant mark which makes that you can tell it's made by you.
Sound:
Sound is overall good. The sound when he grabs his souitcase sounds like some sort of bone cracking though, and I didn't like that. The music was... Well, good fitting I would call it, since I didn't like the style of the music.
Style:
I guess the style is allright toom but as I mentioned before, I really miss the originality. It really feels like you trying too scare us with all the zombies, but It just gets a bit exhagureted, and yes, a bit dull too. Also, the way this story never ends, constantly ending with a "To be continued". My feeling for the plot is that it's good and advanced, but it doesn't go great in 10 episodes and 40 minutes.
Violence:
A very violent flash. This doesn't make a good flash though, it can only spice it up a bit more and increase the style a bit.
Overall:
What can I say? A solid flash, very good graphics, but I was far from blown away by watching it.