Conventions of a slasher

1.A past event is shown for the audience to know what has gone on.

2.The killers aggression and force is triggered.

3.The killer identifies the unjustified group.

4.The young group don't listen to advice given from an older member of the community.

5.The killer follows members of that group.

6. A member of a force hunts down the killer.

7.The killer then takes lives from the young group members.

8.The hero sees the extent of the murders

9.The hero sees the killer.

10.The hero battles with the killer.

11.Th hero kills the killer.

12. the hero survives nut is not free.

Other strong conventions of a slasher are a masked killer, 

a skin piercing weapon,

 lots of blood,

gore, 

more than one protagonist,

a group of young vulnerable characters,

and an opening of equilibrium