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Gamebase Guide

Blood And Bone Demonspawn Endgame Build - Hero Siege Season 10

Updated on Aug 26, 2026
Aug 26, 2026

Overview

This endgame Demonspawn build has fantastic clear ability, and great single target damage! While it might be slightly annoying to not have any built in teleport or mobility built in, it's a great build that will take you far into the season!

This build is made by Sleepy Cat! They're an extremely talented Hero Siege creator, and were kind enough to let us showcase this build!

Check out Sleepy Cat on Youtube here, and follow them on Twitch here!

Important Season Changes

Demonspawn received basically no endgame changes this season, which is actually a good thing for this class. It was balanced pretty heavily going from Season 8 to Season 9, losing a lot of its single-target damage and a lot of its effectiveness. It made it a pretty balanced in-line caster that has a good gear curve going all the way into the late-game mana-stack potential. 

The only change being a sub skill swap in Blood Bolts, moving the extra projectile node in place of the projectile speed node. Meaning early on, maybe at level 5, you could use them instead of impale for a little better time. Or potentially on your journey to 40 if you get stuck on a boss and need a little better range damage or single damage instead of standing next to them with Bone Storm. Though Bone Storm should be completely effective.

Stats, Sockets & Stars

ATTRIBUTE STATS

This particular build utilizes the following attribute stat spread. Copy the spec down into your game.

Strength

Dexterity

Intelligence

Energy

Armor

Vitality

0

0

200

0

0

200

GEAR STATS

Here are the stats you want to try and roll on items you find when gearing up for this build:

  • + Levels to All Skills
  • + Levels to Arcane Skills
  • % Arcane Damage
  • + To Arcane Skill Damage
  • - To Enemy Arcane Resistance
  • + To Intelligence
  • % Faster Cast Rate

GEMS/SOCKETS

Each class in Hero Siege is going to want to try and target specific Gems to slot into their items when possible. In the case of this build, the gems you will want to go after (in order) are:

  • Flawless Amethyst - + To Additive Arcane Damage, + To Arcane Skill Damage
  • Chaos Gem - + To Intelligence, Magic Skill Damage Increased By %
  • Sur Rune - Mana Increased By %

STAR LEVELS

When you start getting multiples of your S-tier Satanics, it might be time to attempt some star leveling. Star leveling S-tier Satanics requires Destiny Shards — used at the crafting bench, each shard has a chance to:

62%

26%

12%

Upgrade The Item By 1 Star

Downgrade The Item By 1 Star

Corrupt: Remove ALL Stars

Each star increases the stats of an item, including orange-text abilities and bonuses. It can also increase +Skill rolls that are NOT +All Skills — so +Elemental or +Physical skills can be scaled this way.

Leveling 1-100

1-8 on DemonSpawn isn’t great, but Impale did get buffed very early in season 9 so it helps a little. It’s still a rough little AoE to use. You could TRY bone frags at level 5 with the extra projectile sub-node but it’ll still not feel so great. Trust me just suffer through and hit level 8 and you will reach the promised land. Take the AoE sub node for Impale at level 5, the damage is pitiful.

Alternatively you could try the new Bloodbolts with a changed passive but I don't think it will be much better as you just need to grind out these eight levels and deal with it. 

1-8 Tree


Incarnation Tree

Standard level 1 to 30 on Blood Surge. Our big node here is definitely duration as well as getting faster cast speed. We also deviate to take some mana regen as mana will be relatively tight early before we can pick up leech.

Blood Surge 1-30 Tree

Gear Loadout

A lot of early gear is extremely modular and can be moved around or changed depending on what you get or what you like. There are a lot of options here. The key is to get as much resistance as you can to survive while also focusing on damage and facilitating a lot of damage gain by filling sockets with flawless gems. 

Early Game Gear


Level 100+ Skill Trees

This is your primary single-target tree for doing maximum boss damage by getting close to the boss and shotgunning them with bone fragments. If you want a more defensive setup, you can remove points from single out and put them in mana shield instead to try to put more damage into your mana instead of your HP pool.  In a full mana stack scenario you would probably do this with your mana shield anyway. 

Tree


Mercenary Loadout

Gear


Mercenary Skill Tree

By opening up your inventory, you can navigate over to your Mercenary. From here, you can select their skills. Here is the final spec used for the Mercenary in this build:


Table of Contents

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