And it’s been given: MA15+ Strong Horror Violence

OFLC have pulled the page listing it as RC.

https://automaton-media.com/en/news/silent-hill-f-ban-in-australia-retracted-age-rating-up-for-review-again/

The pulled page indicates it was an IARC classification i.e. it was automatically classified based an Konami’s answers to a generic survey distributed to classification boards globally. If Konami contest the automatic classification then it will be looked at by actual humans who may determine that offensive content is contextualized to a degree that it can be released (or failing that give a list of content that needs to be modified).