1. The hero is outstanding. They might be important, and historically or legendarily significant.
2. The setting is large. It covers many nations, or the known world.
3. The action is made of deeds of great valour or requiring superhuman courage.
4. Supernatural forces—gods, angels, demons—insert themselves in the action.
5. It is written in a very special style (verse as opposed to prose).
6. The poet tries to remain objective.
7. Epic poems are believed to be supernatural and real by the hero and the villain
Hope this helps :)