Crisis Core: Final Fantasy 7 Reunion – Complete Guide To Buster Sword Proficiency

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  • Buster Sword Proficiency Overview
  • How To Quickly Raise Buster Sword Proficiency

There are a decent number of ways to make Zack Fair a remarkable Soldier First Class in Crisis Core: Final Fantasy 7 Reunion. Whether that's through equipping strong Accessories, rocking devastating Materia layouts, or by simply grinding levels, you can become a force to be reckoned with by putting in a little bit of time and effort.

Aside from the more apparent methods outlined above, you can also raise Zack's proficiency with the Buster Sword, which will unlock several perks and buffs, rewarding you the more you use it in specific ways during combat. While these bonuses won't make you an unstoppable machine, they are more than worth gunning for.

Buster Sword Proficiency Overview

After Zack receives the Buster Sword during the events of the Main Scenario Questline in Chapter 5, he will be able to get more proficient with it, which requires him to perform specific actions with it during combat encounters. All methods involve accessing Battle Stance, which is an exclusive mode for the Buster Sword, having you access it by pressing the "X" and "Square" buttons (PlayStation) simultaneously. Once in the Battle Stance, you can do three actions, which we will lay out in the table below.

Battle Stance Actions

Battle Stance Action


Max Proficiency

Perfect Guard

0.01 per Perfect Guard

Enter Battle Stance just as an incoming attack lands.

Up to 0.07 Percent

Strong Attack

0.03 per Strong Attack

After entering Battle Stance, perform a Strong Attack.

Up to 0.25 Percent

Command Materia

0.03 per Strong Attack

When in Battle Stance, use Command Materia.

Up to 0.25 Percent

Max Proficiency refers to the total percentage of proficiency you can earn from one action per combat encounter. For example, each Perfect Guard will net you 0.01 Percent, maxing out at 0.07 Percent. This means you will only be able to earn proficiency from seven Perfect Guards per encounter.

Despite the proficiency payout being relatively low for each Battle Stance action, you can only earn 0.57 percent proficiency during each combat encounter, with a scarce chance of obtaining an additional 10 percent. So, in general, you will want to avoid the more extended Missions when farming Buster Sword proficiency, which we will cover a bit later in this guide. Lastly, filling out some of your DMW will also net you some Buster Sword Proficiency, which you can find below!

DMW Buster Sword Proficiency

DMW Requirement

Proficiency Bonus

Unlock all Angeal scenes in DMW

+10 Percent Buster Sword Proficiency

Now that we understand how proficiency accumulation works for the Buster Sword, let's go over the bonuses for mastering the Buster Sword. You can find the complete list of Buster Sword proficiency bonuses in the table below!

All Buster Sword Proficiency Bonuses




0 Percent

Strong Attack

Can perform a Strong Attack in Battle Stance.

Enhanced Guard

Automatically block incoming damage while in Battle Stance, reducing all incoming damage by 80 percent.


Obtain AP and MP when defeating enemies during combat while in Battle Stance.

10 ~ 23 Percent

Damage Limit Break

Max damage output from Strong Attacks via Battle Stance is increased from 9,999 to 99,999.

47 ~ 70 Percent

Barrier Piercing

Attacks from Battle Stance ignore the Barrier effect on enemies.

Must fight enemies with an active Barrier to obtain bonus.

71 ~ 95 Percent

Barrier Break

Battle Stance attacks Dispel enemy Barriers.

Must fight enemies with an active Barrier to obtain bonus.

100 Percent


There is no reward for achieving max proficiency.

How To Quickly Raise Buster Sword Proficiency

Finally, let's go over the best methods to raise Zack's proficiency with the Buster Sword quickly and efficiently. Now you may be eyeing up the "1,000 Shinra Troops" Mission and salivating while rubbing your hands together. However, that may be the worst Mission for racking up lots of proficiency with the Buster Sword. If you remember from earlier, you can only accumulate 0.57 percent of proficiency per combat encounter/Mission, meaning the more extended the Mission, the longer you will be going with no gain to Zack's proficiency.

However, you were on the right track and thought process with the Shinra Troops Mission. You just selected the wrong one. Nonetheless, you can find a list of the best Missions to jump into to raise your proficiency level with the Buster Sword. Just don't forget to occasionally jump into Missions where your opponents have active Barriers so you can earn the Barrier Piercing and Barrier Break bonuses. If you do not fight anyone with a Barrier, you will never obtain those abilities, no matter your proficiency rating.

Best Missions For Leveling Buster Sword Proficiency


Mission Name

How To Obtain


50 Shinra Troops

Complete "Shinra Advanced Training" Mission

Becomes available during Chapter 9


Unusually Strong Monsters

Complete "Further Below" Mission

Part of Yuffie's series of Missions.

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