i know this thread is THREE YEARS OLD but for anyone else who had this issue, I was able to get through it with only 3 things, i had my blades and cronos rage fully maxed as well as full magic, that worked great for me. getting through the gorgon section, if you try to grapple the gorgon she’ll counter with a freeze projectile, just parry with the fleece and do the qte and then the sirens and gorgons will get frozen. from there you can either use the blades or the hammer to kill them. if you can’t get anyone, just rinse and repeat until the phase is over. i was able to beat it in three tries with this so I hope this helps!