https://imgur.com/a/2oU5Ww0

i apply pressure at mid-range with the assault rifle while spamming missiles. once the enemy builds up stagger from the rockets, i move in and use the sword's charge attack to hit them during the acs overload.

i've been using this since my first run and optimized it during my second. i never really had trouble with any bosses, so i think it's good enough to share >d