It started out a bit slow but got way better.
At first it was just being silly but as the story progresses it actually started to get interesting. Mostly because it wasnt following the original story line anymore but also the jokes became less forced ( more room for plot ). In those moments you even managed to create a resident evil feeling.
But this could also be because I played resident evil 5 and well from that point on even playing "hello kitty adventure" with resident evil sound effects would give me more of a resident evil feeling.
Graphics were ok for the style you were going for. Simple and effective while still being able to draw some stuff quite well actually.
Sound was ok, voice acting was good. But there was a bit of desyncronisation in the end. I know 2 ways that might fix this in future, well at least for my flashmaker version.
1) Make a layer that plays streaming sound the entire time but on such low volume that it cant be heard. (only works if you made the movie 1 large line instead of using several scenes, ussually the gaps between the sound cause the desync between sound and graphics. )
2) When switching scenes use simple scripting to pause the movie manually
and then skip the movie a frame before starting to play again.