NES version IS better, but...
Well, let's be honest! This is in F&#%ing Flash. Well done on the getting the mechanics down right. And you made the enemies smart enough to gang up on you, and to go pick up weapons dropped from their friends. Very cool! I could stand to learn a thing or two from you.
Now, there some flaws, but they're rather minor.
1. I didn't care for the blood. RCR was a comical beat-em-up - you don't the gore to make it a good game.
2. Why isn't Alex wearing a school uniform like the others. He's a student too, isn't he. And for that matter, where's Ryan? Make the player able to choose.
3. Too short. He he! Truth is, I liked what I saw, but it was not enough. At least throw in the first shopping center.
All of that said, very excellent demo. I know it's over 3 years old, but I hope you plan on making another.