Story: Zombies and big corperations and guns and stuff!
Animation: Very different than the normal stlye you expect from anime, It pretty much looks like one big cut scene from resident evil 5.
Sound: Sets the mood and follows it well.
Characters: Leon S Kennedy is a bad ass. Probably the only dude I can think of that can pull off that dreamy swoopy emo boy hair cut. Don't mess with him. Clare Redfield is some pretty sweet back up for him too
Overall: Very few things like this, if anything it's fun to watch because it is so different. Sweet action and animation! Worth watching! Give it a shot!