Unless stated otherwise, everything here is Diablo II: Resurrected build 3.3.93847, Reign of the Warlock.
Unless stated otherwise, everything here is Diablo II: Resurrected build 3.3.93847, Reign of the Warlock.

Allows you to swing two weapons at once; each successful attack increases your overall speed; requires you to equip two weapons.
Frenzy is a Barbarian Combat Skill (level 24, requires Double Throw). With a melee weapon in each hand it swings both in one sequence, like Double Swing, and every swing that lands feeds a buff that makes you attack and move faster, one step per hit. The numbers that decide it are the damage bonus, +90% at level 1 and +185% at level 20 before synergies, and the buff's ceiling, +42% attack speed and +171% run/walk at level 20. Each weapon's swing costs 1.5 mana.
| Level | Mana | Run/Walk Speed min: + | Run/Walk Speed max: + | Attack Speed min: + | Attack Speed max: + | Damage: + | Attack Rating: + |
|---|---|---|---|---|---|---|---|
| 1 | 1.50 | 47% | 47% | 7% | 7% | 90% | 100% |
| 2 | 1.50 | 47% | 68% | 7% | 13% | 95% | 107% |
| 3 | 1.50 | 47% | 84% | 7% | 18% | 100% | 114% |
| 4 | 1.50 | 47% | 99% | 7% | 22% | 105% | 121% |
| 5 | 1.50 | 47% | 110% | 7% | 25% | 110% | 128% |
| 6 | 1.50 | 47% | 119% | 7% | 27% | 115% | 135% |
| 7 | 1.50 | 47% | 126% | 7% | 29% | 120% | 142% |
| 8 | 1.50 | 47% | 131% | 7% | 31% | 125% | 149% |
| 9 | 1.50 | 47% | 138% | 7% | 33% | 130% | 156% |
| 10 | 1.50 | 47% | 142% | 7% | 34% | 135% | 163% |
| 11 | 1.50 | 47% | 147% | 7% | 35% | 140% | 170% |
| 12 | 1.50 | 47% | 151% | 7% | 36% | 145% | 177% |
| 13 | 1.50 | 47% | 155% | 7% | 37% | 150% | 184% |
| 14 | 1.50 | 47% | 158% | 7% | 38% | 155% | 191% |
| 15 | 1.50 | 47% | 160% | 7% | 39% | 160% | 198% |
| 16 | 1.50 | 47% | 164% | 7% | 40% | 165% | 205% |
| 17 | 1.50 | 47% | 165% | 7% | 40% | 170% | 212% |
| 18 | 1.50 | 47% | 167% | 7% | 41% | 175% | 219% |
| 19 | 1.50 | 47% | 169% | 7% | 41% | 180% | 226% |
| 20 | 1.50 | 47% | 171% | 7% | 42% | 185% | 233% |
| 21 | 1.50 | 47% | 173% | 7% | 42% | 190% | 240% |
| 22 | 1.50 | 47% | 174% | 7% | 43% | 195% | 247% |
| 23 | 1.50 | 47% | 176% | 7% | 43% | 200% | 254% |
| 24 | 1.50 | 47% | 178% | 7% | 44% | 205% | 261% |
| 25 | 1.50 | 47% | 178% | 7% | 44% | 210% | 268% |
| 26 | 1.50 | 47% | 180% | 7% | 44% | 215% | 275% |
| 27 | 1.50 | 47% | 182% | 7% | 45% | 220% | 282% |
| 28 | 1.50 | 47% | 182% | 7% | 45% | 225% | 289% |
| 29 | 1.50 | 47% | 183% | 7% | 45% | 230% | 296% |
| 30 | 1.50 | 47% | 183% | 7% | 45% | 235% | 303% |
The damage bonus is skills.txt Param1 (90) plus Param2 (5) a level: +90% at level 1, +185% at level 20, +235% at level 30; it reads lvl. Hard points in Double Swing and Taunt each add 8% (Param8, blvl). The attack-rating bonus is ToHit 100 plus LevToHit 7 a level: +100% at level 1, +233% at level 20.
The buff has two stats, each on a diminishing-returns curve between a floor and a ceiling: run/walk from Param3 (20) toward Param4 (200), and attack speed from Param5 (0) toward Param6 (50). The "min" columns are the first step, +47% run/walk and +7% attack speed at every level; the "max" columns are the top step, which the curve reaches at the skill's level: +171% and +42% at level 20, +183% and +45% at level 30, never past 200 and 50. The row applies them as the aura stats velocitypercent and attackrate.
Duration is Param7, 150 frames, 6 seconds, plus 10 frames (0.4 seconds) per hard point in Increased Stamina (auralencalc, blvl); the Basin marks that synergy as Resurrected's. Mana is 3 in 128ths (manashift 7), 1.5 a weapon; the Basin says it is charged once per weapon, so the tooltip prints 3.
Each swing is a normal weapon attack: Chance to Hit with its own weapon's attack rating plus the bonus, then that weapon's physical damage with the +% added to your other Enhanced Damage, carrying leech, Crushing Blow, Deadly Strike and Open Wounds. Two targets in range take one swing each; one target takes both. The Basin says the sequence cannot be interrupted by Blocking, casting, hit recovery, knockback or stun.
The buff is the Basin's account: the first successful hit starts the frenzy at the first step; every later successful hit with either weapon resets the duration and moves the buff up one step, so it takes 20 hits to reach the level 20 ceiling. The speed carries over: switch to another attack while the frenzy is up and its attack-speed and run/walk bonuses apply to that attack until the duration runs out.
The Berserk synergy converts, it does not add: the Basin's page says 20 hard points in Berserk make a Frenzy hit 80% physical and 20% magic. The conversion happens after +% damage and a mastery, Critical Strike or Deadly Strike double, and before resistances, see Magic Damage.
All four read blvl. Frenzy's own damage, attack-rating and speed lines read lvl, so +skills from items raise the damage and push the speed ceilings along their curves. Frenzy feeds nothing. A weapon mastery adds its attack rating, damage and critical-hit chance to each swing with a weapon of its class; two different weapons can use two masteries.
A player's hit on another player is cut to 17% of its value (difficultylevels.txt PlayerDamagePercentVSPlayer) before anything else, see Player versus Player. The buff is not damage and is not cut; a hit that lands still counts as a step. The Basin's page says nothing more about Frenzy against players.
Written from the game's tables (build 3.3.93847) and the cited pages; a per-level table is computed from skills.txt and skilldesc.txt by the same evaluator the skill pages use. A “legacy rule” is a published engine rule no table proves; a “game table” is read from the table named. · Report incorrect data