Uncommon item (green). What the game says, what it really does, what each copy adds and what it pairs with.

Berzerker's Pauldron
Uncommon item (green)
Kill 4 enemies within a second and you go into a frenzy for 6 s: faster movement and double attack speed. Each extra one adds 4 s.
Game text: «Killing 4 enemies within 1 second sends you into a frenzy for 6s (+4s per stack). Increases movement speed by 50% and attack speed by 100%.»
Stacking: Each copy adds the same, no cap.
Watch out: You do not need 4 kills within one second: just no more than a second between kills.
| 1 copy | 2 copies | 3 copies | 5 copies | 10 copies |
|---|---|---|---|---|
| 6 s | 10 s | 14 s | 22 s | 42 s |
Each copy adds the same.
twice the enemies: the frenzy never ends.
speed on speed.
Kill 4 enemies within a second and you go into a frenzy for 6 s: faster movement and double attack speed. Each extra one adds 4 s.
Stacking: Each copy adds the same, no cap.Watch out: You do not need 4 kills within one second: just no more than a second between kills.
Sources: the game's English text (name and description), the Risk of Rain 2 wiki (riskofrain2.wiki.gg: this item's page, read on 31 October 2026; numbers, stacking formula and notes) and the wiki's survivor pages. The plain-words text and the synergies are ours. Icons: Risk of Rain 2 (Hopoo Games / Gearbox).