Slasher movies might try to be cute (see first part of the Cold Prey series or High Tension for that matter), but this is as down and dirty as you might expect it to be. It is also exactly what you think it will be throughout. In other words: It is dire predictable. It's still nicely done and all, you just can see where it is heading (actually you might know where it is heading before it even begins). If you don't let that spoil your "enjoyment" of the movie, you are good to go.
In this case, it is not really necessary to have seen the other two movies of the "franchise". Actually you might be better off not having seen them. Slasher fans will enjoy this (I guess most did enjoy the first one too), but for everyone else this might prove to not be enough of anything to make them wanna watch it through
In this case, it is not really necessary to have seen the other two movies of the "franchise". Actually you might be better off not having seen them. Slasher fans will enjoy this (I guess most did enjoy the first one too), but for everyone else this might prove to not be enough of anything to make them wanna watch it through