Shattering Justice

Shattering Justice is a returning item from Risk of Rain 1.

Upon hitting an enemy 5 times, that enemy receives the "Pulverized" debuff for 8 seconds (+8 per stack). This debuff subtracts 60 from the recipient's Armor and does not stack. Since most enemies don't have any or have very little armor, this item usually sets their defense to a negative value.

The build-up effect lasts for 2 seconds times the proc coefficient of the hit. Each individual build-up debuff is tracked individually. Because the duration of the build-up is affected by the proc coefficient, damage-over-time effects like the Tri-Tip Dagger do not put any build-up on enemies.

This item can be seen as a mostly consistent damage buff for almost all characters, as the way the game calculates damage through armor also accounts for negative armor and increases your damage accordingly.

Tips
In Multiplayer, it is wise to select the player with the highest attack speed to grab this item whenever it appears, as the debuff is applied after 5 hits from any ability regardless of its damage. This means Shattering Justice is best on MUL-T with the Auto Nail Gun equipped and Commando with Phase Blast equipped, as the initial 6 shots fired by the Nail Gun and the 8 shots fired by Phase Blast will instantly cause an enemy to be affected by the debuff, allowing the rest of the team to focus on the afflicted monster for serious damage.
 * Conversely, this item is weaker on Loader, since her slow base attack speed combined with her focus on her utility skill makes it difficult to apply the debuff without going out of her way to apply hits.

Trivia

 * This item is a reference to the Black Cleaver item in the MOBA League of Legends, as both share the same effect of reducing armor of hit enemies as well as a similar two-sided weapon design.