Item description:

1) From the loading point, defeat the boss and get the DEMON OF HATRED trophy.

2) Create prayer necklace to pop the PEAK PHYSICAL STRENGTH trophy.

Refer to Square One games Sekiro platinum walkthrough for (1) part11 min 00:00 ad (2)part 10 from min 41:35 for these 2 trophies.

NOTE: the reason i suggest to defeat the demon boss first is because if you create the necklace first and head on to the boss, it will mess up your infinite health mod and it might cause Sekiro to die easily to the demon.