Lords of the Fallen

Halsan

Strength rune — fits an S socket, or any meta socket, which takes a rune of any type. Does one thing in a weapon and something else in a shield.
Rune S socket Strength Changes attack rating Datamined
Halsan rune icon from Lords of the Fallen

Reduces Strength attribute scaling. The elite Nanheim Guard forwent any kind of magical enhancements in battle, preferring to rely on their natural physical and mental prowess rather than forces they regarded with mistrust and disdain.

In a weapon

Increase physical damage. Reduces Strength attribute scaling

Damage Physical
+10
Scaling Strength
×0.75

In a shield

Increase Vitality attribute

Vitality
+2

A shield, not armor. No armor piece in this game has a rune socket; all 35 shields do — and the game's own description for this rune says "Shield function".

What this rune is actually worth

More than the number suggests. A damage rune modifies the weapon's base damage, and your stat scaling is then applied on top of the raised base — so the rune is multiplied by your build rather than simply added to the end.

Halsan adds +10 physical to base. On a well-scaled build that is worth roughly double at the end of the calculation.

Measured, not estimated

On a level-173 character with Paladin Isaac's Sword +10 — attack rating 621 (311 base + 310 scaling), hitting for a consistent 541:

ReadingAttack ratingDamage
No rune621541
Vaus socketed (+10 physical) 641 558

Base went 311 → 321, scaling followed to 320, and the +10 rune was worth +20 attack rating. Predicted 558.4 against a measured 558. Verified in game

This rules out both figures in circulation. A flat +10 on the final total would have given 550. The +10% widely published for Vaus would have given 595. Neither matches.

Why nobody could see this

Socketing a rune does not change the attack rating on your stat screen — not by a single digit. The effect is real and the display simply omits it, so the only way to observe a rune working is to hit something and compare damage. That is why this has been guesswork in the community for so long, and it is why the figure above was measured with a weapon, an enemy and a stopwatch rather than read off a menu.

Where to find it

How
Enemy drop
Dropped by Marksman
Guaranteed
Dropped by Swamp Spirit
Guaranteed
Dropped by Charred Spirit
Guaranteed
Confidence
Modelled
Sells for
50 vigor

Other Strength runes

Strength runes carry the S socket letter, so these are the runes that fit anywhere this one does.

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