In Hero Siege Season 10 Mercenary can really help you with farming. In this guide we cover how you can hire them, what each type of mercenary is good for and how to keep them alive as long as possible.
How to Hire a Mercenary in Hero Siege
Mercenaries are hired from Gar Nor, the NPC next to the training dummies. There are three:
- Knight: Act 1, Town of Inoya
- Archer: Act 3, Village of Mos’Arathim
- Magister: Act 6, Dawn’s Chapel
Only one can be active at a time, and each has its own skill tree you put points into.
One tip: Don’t make my mistake; Don’t hire mercenaries until you have spare Magic Find gear ready. A mercenary without enough gear dies over and over, and every revive costs gold.
What each mercenary is good for
Knight (Act 1)
The default pick, and for good reason. It’s tanky, and its skill tree is full of defensive passives. Max the ones that reduce damage taken and raise armor, then put single points into stuns and taunts. Most Season 10 setups use the Knight purely for magic find and buff auras.
Archer (Act 3)
Worth it if your character scales with attack speed, since the Archer has a strong attack speed buff. Its real job, though, is carrying an aura weapon like Valkyrie, which is why physical builds pick it up. Low survivability, so expect deaths.
Magister (Act 6)
To be honest nobody goes for this one. It’s a caster with a Magic Skill Damage % buff, but it only appears in Act 6, long after most players have hired someone. It also can’t carry the aura weapons that make the Archer useful. Skip it unless you’re experimenting.
Both the Archer and Magister want stacked +all skills and cooldown recovery, since that raises their buff values and keeps them running.
What is The Best Use For Mercenaries?
This is the mechanic that matters. Magic Find equipped on your mercenary benefits you. Community guides describe merc MF as being added to your own MF on kills, which is why experienced players stack MF on the merc instead of forcing it into their main combat gear.
If you’re farming seriously, pair this with a proper loot filter so you actually see what your merc finds for you.
Mercenary Gear: 7 Slots, Not 4
Since Season 8, mercenaries also use gloves, belt, and boots on top of helmet, weapon, armor, and shield. That’s seven slots.
A practical gearing path:
- Start with a cheap socketless weapon.
- Move to a 4-socket weapon filled with Ist runes (15% MF each).
- When durability becomes a problem around Hell 5 or Inferno, add a 6-socket shield stuffed with Ist.
Three items you should know about: Ent’s Blessing, a cheap runeword chest with a regeneration and resistance aura for early game; Veil of Consecration, a helmet with non-damaging aura range and effectiveness; and Mask of the Celestial, the stronger version, which got a flat +3 All Skills on August 16, 2026. Since buff strength scales with +all skills, that’s a small but real upgrade for aura mercs.
How to Keep Mercenary Alive in Season 10
The oldest complaint about mercenaries is that they’re great while leveling but die instantly at endgame. That’s probably worse now. Season 10 rebuilt monster AI to be more aggressive and stop getting stuck, and raised monster life scaling per player from 0.65 to 0.85. Progression also compressed, so Nightmare is roughly the old Hell 1 and Hell sits around the old Hell 4.5, followed by Inferno.
Budget MF gear usually holds up until Inferno. That’s your signal to upgrade. If your merc dies constantly before then, the problem is your gear, not the merc.
One more thing: Season 10 changed nothing about the mercenary system itself. No new slots, no skill tree rework. Everything current carried over from Seasons 8 and 9, so pair your merc with one of the best Season 10 builds and focus on gear instead.
Which mercenary are you running this season? Let me know in the comments.
