Concussion Grenade

Not to be confused with Stun Grenade from the sequel.

Concussion Grenade
Description	(6%) On hit: 6% chance to stun enemies for two seconds
Stacking	+6% multiplicatively
Unlock	Engineer: Kill a Boss in 15 seconds or less.
Rarity	Uncommon
Type	Utility

"Chance to stun enemies."— Pickup Text

The Concussion Grenade is an uncommon utility item in Risk of Rain. On hitting an enemy, the player has a 6% chance to stun enemies for two seconds.

Tactics

Item Synergies

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• Partnering this item with Permafrost can be beneficial, as the combination of stunning and freezing enemies greatly hinders their ability to move.

Character Synergies

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• Characters with a fast rate of fire, such as Commando, can greatly benefit from this item, as they can nearly stun-lock an enemy with a good amount of stacked items.

Trivia

• The chance to stun reaches roughly 100% at 384 pickups.[1]