Complex sentence: The film is significant within Fulci's filmography as it is one of the first in which he began using violent gore effects, something he would continue to do in his later films, such as Zombi 2, The Beyond and City of the Living Dead.
Split into simpler sentences: The film is important to Fulci's filmography because it is one of the first in which he began using violent gore effects. Something which he would continue to do in his later films such as Zombi 2, The Beyond and City of the Living Dead.