Based off of the Any% route pathing.

tl;dr you use L-bombs on the fights until before the Zanarkand Chapter 1 boss, and then Dark Matter everything else to death. That's it.

https://docs.google.com/document/d/e/2PACX-1vSFxCMC_KMfWICyhjpdR4qLni5JdT9K2hVl5eRDvWg42HpeffePODFtyYMYNzqGmn97H9Xw6h0cCpl-/pub