This is a guide to beating the Boss Specimen H0512 in the game Final Fantasy VII Rebirth (FF7R). This article explains Specimen H0512’s attack patterns, weaknesses, and tips and strategies for defeating it on both Normal and Hard Mode.
How to Beat Specimen H0512 in Final Fantasy VII Rebirth (FF7R)

Use Punisher Mode’s Auto-Counter
As Specimen H0512 mostly uses melee attacks with its Claws, most of its attacks can be countered using the Auto-Counter feature of Cloud’s Punisher Mode. When it readies an attack like Rend, hold R1 to block, and Cloud will strike back with gusto.
Aim for the Claws
Specimen H0512 mostly attacks using its two massive Claws, and its Abilities like Rend and Seize are reliant on them. By crippling both of these, you can render it largely unable to attack. On the other hand, keep in mind that crippling the claws will add to the Focus Gauge, but not automatically cause Staggering.

Cast Silence on H0512-OPTs
Unlike other fights with multiple opponents such as Enigmatic Spectre, there’s no need to take out the smaller foes to deal damage to the main opponent. By Silencing them, you can leave them unable to use Magic attacks like Fire and Blizzard, and render them inert during the battle.
Increase Defense with Barrier
If you’ve Silenced the H0512-OPTs, you won’t have much to deal with in the way of Magic, so you’ll mostly only have to worry about physical attacks. Set up Barrier on Cloud, so that he can continue wailing on Specimen H0512 while taking reduced damage from its hits.