Overview
This build turns the Mercenary’s Gemling Legionnaire into a heavy-slam powerhouse, pairing Sunder with the Cha’s Madness lineage support to deliver one of the hardest-hitting melee setups in patch 0.5. Sunder already carries one of the highest attack-damage multipliers of any melee skill, and the Gemling’s extra gem quality layers multiplicative attack speed directly onto Sunder and Whirling Slash — so the build feels fast despite swinging a two-hander through Giant’s Blood.
What sets it apart is the defensive identity. Rather than stacking raw life, it runs an evasion-deflect base with shield block, then scales physical damage from maximum life via a slept-on chest piece. Keeping the Gemling’s Virtuous Barrier modes alive (they drop on hit) is the whole reason for going so tanky — the creator reports roughly 60,000 effective HP in Path of Building and a long unbroken no-death streak through endgame mapping.
It lands as a mid-budget endgame farmer, around 60–70 divines at current prices, built to clear maps quickly while still opening hard on rares and bosses with an armour-break rotation.
Pros & Cons
Pros
- Extremely tanky — evasion, deflect and block stack into ~60k EHP and a near-immortal feel
- Huge slam damage from Sunder’s high base multiplier plus Cha’s Madness
- Fast for a slam build thanks to multiplicative attack/skill speed and Whirling Slash mobility
- Strong sustain — leech via Vampiric, and zero-mana casting through Defy while Surrounded
- Crit immunity from matching red/blue gem counts
Cons
- Gear-gated — needs Constricting Command, Astramentis and the specific chest to come online
- Attribute-hungry; stacked strength and Astramentis are mandatory to wield the two-hander
- Weapon-set and passive swapping is confusing for newer players
- Not a league-start build; mid-budget cost of entry
Key Skills
- Sunder — main slam, scaled by the Cha’s Madness lineage for peak single-hit damage
- Whirling Slash — mobility and whirlwind generation, boosted by skill speed
- Armour Break — opener on rares and bosses to strip armour
- Forge Hammer / Infernal Cry — fissure ignites and aftershock detonation
- War Banner (via Bannerman) — the build’s best spirit buff: multiplicative attack damage and speed
Gear & Anointments
Built around a two-handed slam weapon wielded through Giant’s Blood, so heavy strength investment via Astramentis is required just to meet the stats. Constricting Command enables the Surrounded passive cluster — the real engine for attack speed, regen, evasion and block. The chest piece scales flat physical from maximum life and ignores the minus-max-resist rune penalty, which is the core of the tankiness. Wind Dancer covers evasion and leech; Paragon or Embibing Power are strong amulet anoints for more quality/attack speed. Confirm exact item rolls against the source video’s Path of Building.
Endgame Notes
Designed as an endgame map farmer — the creator runs it as their main farming character and notes it scales comfortably into hard content. Aftershocks (76%+) double up slams for free, and the Surrounded cluster keeps defenses high even in single-target boss fights since there is always at least one enemy in range.
Credits & Source
Build credited to Ulfhednar. See the source video for the full build’s gameplay footage and voice commentary: POE 2 Sunder Gemling Is Insane! | Full Build Guide.