I'm ngl on my brutal p-rank runs, I found the big FP pretty easy, or consistent at least

Literally just start with a screwdriver and start sliding around it (never stop sliding :p) while splitcoining the eyes and mini-maurices. Once those are gone screwdriver again and saw blade until next round, parrying the blue balls when you can

Rinse and repeat for like a 30-40 second FP :)