The structure of more or less every slasher flick tied into one, without establishing the killer's past, creating the sense of tension that cultivates into the HE'S BEHIND YOU MOMENT which ensures us that the character on screen will not be in the sequel (and there will be lots of them!), or trying to convince us that the characters can act.
The characters meet the victim stereotypes; the vain jock, dumb blonde slut, stoner, ethnic first victim and nerd (perhaps not so much the nerd but it's fun to pick on them all the same).
There is no plucky heroine/hero, usually a hippy. Instead all the characters are established right off the bat as a bunch dick-sniffers who you wet yourself with the anticipation of the possibly ironic way they get butchered.
In short the film cuts tight into the meaty flesh of the genre.
The animation in at times fluent and at others not. For example when Vain jock is conversing with the ticket guy, there is not emotion or stimulus beyond the mouth movement. This is always a bad move, as it just looks lazy. Imagine if people did that in real life, outside conversing with Blockbluster employees who have lost the will to continue their lackluster existence.
The music was clear and didn't over shadow everything on screen. It also fit the mood at the time; it's always good to see when people have worked at the audio.
Speaking of audio, the voices too sounded well done and clear. However their voices sounded quiet blad and emotionless, though I'm taking that as another knock at the slasher genre. It's sounds better when paper thin characters are portrayed in 2D, rather than in real life.
In short, a fun little film to kick of the halloween season. Like Scary Movie, only in Flash and hopefully without the endless knock off's (now with 50% less humour and more MTV).