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Projectile Weakness

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Projectile WeaknessCurse, Spell, AoE, Duration
Radius: 22
Mana Cost: (24 to 50)
Cast Time: 0.50 sec
Requires Level 24Curses all targets in an area, making them easier to pierce and to knock back, and increasing the damage they take from projectiles.Per 1% Quality:
Cursed enemies take 0.5% increased Damage from Projectile Hits
Base duration is (9-10.9) seconds
Projectiles Pierce Cursed Enemies
Hits on Cursed Enemies have an additional 25% chance to Knockback
Cursed enemies take (25-44)% increased Damage from Projectile Hits
+(0-10) to radius
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Projectile Weakness skill icon.pngProjectile Weakness inventory icon.png
Level: 24
Purchase Costs
Normal1x Orb of Alteration
Sell Price
1x Scroll Fragment

Projectile Weakness skill screenshot.jpg

This wicked curse alters the very flesh of those afflicted, turning their armor and hide to mere paper. Any projectiles striking a cursed target have a high chance of piercing it, boring straight through to hit additional enemies standing behind. Foes under the Projectile Weakness curse will find themselves frustrated trying to reach the archer, since every volley has a good chance of causing a knockback. A Ranger trained in the curse of Projectile Weakness will be counted amongst the most feared combatants on the battlefield.

Description on the official Path of Exile website [1]

Projectile Weakness is a spell that curses all targets in an area, making them easier to pierce and to knock back. Additionally affected targets take increased damage from projectiles.

Skill Functions and Interactions

  • Cursed Enemies take #% increased Damage from Projectiles: because this modifier is an increase to the target's damage taken, it is multiplicative with players damage dealt and additive with any other increased damage taken effects on the target.[2] It does not affect damage dealt by damage over time effects such as poison, ignite, or Essence DrainEssence DrainProjectile, Spell, Duration, Chaos
    Mana Cost: (9 to 27)
    Cast Time: 0.75 sec
    Critical Strike Chance: 5.00%
    Damage Effectiveness: 60%
    Requires Level 12Fires a projectile that applies a damage over time debuff when it hits. You are healed for a portion of the debuff damage. The debuff is spread by Contagion.Per 1% Quality:
    1% increased Chaos Damage
    Deals (21.3-1159) Base Chaos Damage per second
    Regenerate 0.5% of Debuff Damage as Life
    Base duration is 3.8 seconds
    Deals (6-334) to (9-501) Chaos Damage
    Modifiers to Spell Damage apply to this Skill's Damage Over Time effect
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Essence Drain skill icon.png
  • Additional Pierce and Knockback Chance: any projectile type has a higher chance to pierce (additive with other sources of piercing chance) and a chance to cause the target to be knocked away from the player who created the projectile. It does not matter what direction the projectile strikes from, knockback is always away from the player who initiated the spell or attack projectile.
  • Projectile Weakness can be turned into an aura by linking it with the Blasphemy SupportBlasphemy SupportSupport, Curse, Aura
    Icon: A
    Can store 1 use(s)
    Cooldown Time: 0.50 sec
    Requires Level 31Supports curse skills, turning them into auras that will apply their effect to all enemies in an area around you.Per 1% Quality:
    0.5% increased Effect of Supported Curses
    Supported Curse Spells are Cast as Auras
    (0-76)% increased Area of Effect of Curse Skills
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    The aura version of Projectile Weakness

Gem level progression

Lua error in Module:Skill at line 630: No gem level progression data found.

Quest reward

This skill is given as quest reward for the following quests:
Lost in Love
Act 3

Vendor reward

This skill can be bought at the listed npc vendors after completing the following quests:
Lost in Love
Act 3
A Fixture of Fate
Act 3
Fallen from Grace
Act 6
Lilly Roth

Related helmet enchantments

The following helmet enchantments affect Projectile Weakness

NameFor generated item/monster modifiers the minimum item/monster level respectively. Some generation types may not require this condition to be met, however item level restrictions may be raised to 80% of this value.Stats
EnchantmentProjectileWeaknessCurseEffect16620% increased Projectile Weakness Curse Effect
EnchantmentProjectileWeaknessCurseEffect27530% increased Projectile Weakness Curse Effect
EnchantmentProjectileWeaknessDuration16630% increased Projectile Weakness Duration
EnchantmentProjectileWeaknessDuration2_7545% increased Projectile Weakness Duration

Version history

Version Changes
  • Increased Area of Effect mod and its progression per level doubled.
  • Pierce chance is now 50% at all levels. Knockback chance is now 25% at all levels. Mana cost reduced at all levels. Area of effect increases per gem level reduced, but the base area of effect has been increased by 37.5% (from 16 to 22). Normalised the increased duration per gem level. It now grants 0.5% chance to pierce cursed enemies per 1% quality (was 0.75% per 1% quality).
  • No longer reduces the enemy's chance to evade projectile attacks. This ability has been moved to the new skill Poacher's Mark.
  • Undocumented Change: Projectile damage taken changed from "more" to "increased".
  • Now increases damage taken from projectiles.
  • Projectile Weakness has been added to the game.


  1. "Dexterity skills". Official Path of Exile website.
  2. Mark_GGG (April 16, 2014). "Vulnerability Quality". Official Path of Exile Forums. Retrieved April 16, 2014.
  3. Mark_GGG (July 26, 2016). "Verify confused about projectile weakness double dipping with poison.". Reddit. Retrieved January 24, 2017.