The overall strategy is simple go into a map that is your skill level stock up on treats for your pet so it can gain bonus item when you cut the limb off as for the limb severance get into a fight with the spider oni I cant remember its proper name, but it has 8 legs that you can attack if you hit the back button on your gamepad you go into miasma vision and the leg you attack changes color as its hp lowers use the rage and drain special to maximize damage while timing your strikes carefully and don't forget the dodge roll as the only other way to avoid damage directly is a counter once you have severed the limb the oni's soul is weakened and you will be able to kill it, but that is for another day also when the limb is in the ground collect it
for great materials.
