In most "Slasher" style games or scripts, success comes down to a few critical areas:

In many systems, you must wear specific items to "perma-learn" their associated skills.

What is a good skill list for a Slasher to have? : r/RPGdesign

These builds often struggle against large groups. Focus on separating a single opponent to finish them off quickly.

A high-knockback move useful for clearing space when surrounded.