I think that a complete guide of the slasher subgenre it's almost impossible to write: because of its very simple&cheap formula, a lot of movie have been produced since the beginning of the 80s.
Among these, one of the earliest and most appreciable is MADMAN by Giannone, which is a very honest low-budget flick with some variations from the original (Cunningham's) model and a more fairy-tale oriented atmosphere (the nominal villain really looks like an ogre). Of course, as many other similar features, it has its flaws - acting, for example - but that's not what you seek from such kind of movies. The special effects are pretty well done and they're obtained with very simple solutions. Giannone's style is good, especially in the use of deep focus and the cinematography is genuinely inventive (the green painted leaves!). Eventually, it's better than many others.
Among these, one of the earliest and most appreciable is MADMAN by Giannone, which is a very honest low-budget flick with some variations from the original (Cunningham's) model and a more fairy-tale oriented atmosphere (the nominal villain really looks like an ogre). Of course, as many other similar features, it has its flaws - acting, for example - but that's not what you seek from such kind of movies. The special effects are pretty well done and they're obtained with very simple solutions. Giannone's style is good, especially in the use of deep focus and the cinematography is genuinely inventive (the green painted leaves!). Eventually, it's better than many others.