Void Sword/Strategy and Tips

Strategy
The void sword is primarily a defensive weapon. Although it deals minimal damage, the sword can make you virtually invincible in combat if you use it correctly. By using a leveled-up void sword while your health is at least three quarters full, you can afford to take damage since you will regain a significant portion of health with each attack. This strategy is especially useful on the Prince of Darkness difficulty.

The void sword is also an incredibly useful tactical weapon due to it's freezing ability. Don't be afraid to use void projections or moves such as blizzard or the upgraded drop-and-perforation to freeze enemies in their tracks and temporarily take them out of the battle. Once they're frozen, either concentrate on the more powerful enemies or switch to either the shadow whip of chaos claws to deal more damage to the frozen enemy. Keep in mind that enemies that are frozen will slowly lose health on their own over time. Also, don't forget that you can also freeze most of the bosses. This works incredibly well on Raisa, Carmilla, and Agreus.

Pros

 * Regains health with each attack. The amount of health recovered depends on your mastery level.
 * Has the ability to freeze enemies. Ice duration increases along with weapon mastery.
 * Frozen enemies slowly lose health over time.
 * Excellent defensive and tactical weapon.
 * Possesses decent range.

Cons

 * Deals minimal-to-moderate damage, depending on mastery level.
 * Usage is limited to length of void magic gauge.
 * Cannot generate blood orbs in combat.