ExtendedBosses

v0.8.11·Updated 2026-10-03

Raid-style boss fights from vanilla parts only: HP phases, add waves, nests, lieutenants, shields, burn windows, threat - seen by every player, mod or not.

Screenshots 8 screenshots

About this mod Author’s original text

ExtendedBosses

Raid-style boss fights for a group, from Eikthyr to Fader: HP phases, waves of adds,

destructible nests, biome mini-bosses as lieutenants, shields that drop when the nests

fall, burn windows, marks, ground hazards, resistance shifts and a threat table — built

only from vanilla prefabs, animations and RPCs, so players without the mod see and

feel the same fight.

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| Eikthyr marks a player for lightning — spread out! | The Elder: roots under the marked player, a seed grows a new nest |

Phase announcements — every player sees them, with or without the mod

  • Profiles Light (bosses with reinforcements), Raid (default) and Hard, globally

or per boss; any boss can be set back to Vanilla. Everything switches without a

rejoin.

  • Group scaling for 1–8 players: boss HP, adds, nests, stars and marks grow with the

group; solo stays doable.

  • Reward on top of the vanilla drop: coins and valuables, about a stack of each

material of the biome, about half a stack of the next biome's, and upgraded gear of the

next biome for a group of 2+.

  • English and Russian messages; players without the mod get them in the language set

by GuestLanguage.

  • The server's settings apply to every client with the mod; config edits are picked up

without a restart.

Install on the host; guests do not need it. With the HostOwner mod (Bosses = true)

the host keeps owning the boss whoever hits it. On a dedicated server every player who may

own the boss needs the mod.

Early version: every boss is implemented, in-game testing is in progress — the numbers are

starting values and all adjustable.

How a fight goes

The boss's own attacks and AI stay vanilla — everything below is added on top. Described

for the default Raid profile.

  • Nests. As the fight goes on, the boss raises destructible spawners of its biome —

greydwarf nests, bone piles, eggs…

  • Shield. While the nests stand, the boss takes only a fraction of the damage.

Break them all → the boss is staggered and takes ×1.5 damage for 10 s. Ignore

them and the shield crumbles on its own after a while — without the bonus.

  • Phases. About once a minute the boss enters a special state for 30 s — armor

against one damage type, regeneration, damage reflection… The message in the centre of

the screen tells you how to answer it.

  • Marks. The boss names a player and 3 s later strikes where they stand. Step away

from your friends.

  • Lieutenants. Mini-bosses of the biome join the fight, along with waves of adds.
  • Reward. On top of the vanilla drop: coins and valuables, about a stack of each

material of the biome, about half a stack of the next biome's, and upgraded gear of the

next biome for a group of 2+.

Light keeps the adds and nests but drops shields, phases and marks; Hard is Raid,

denser and tougher. All the numbers:

FIGHTS.md.

The bosses

Eikthyr — the tutorial

No shield and no phases: every mechanic once, gently.

  • Charge — every 20 s he dashes at double speed at a player who keeps their distance.
  • Skull pile — raises Meadows skeletons until you break it (it glows for players with the mod and drops nothing).
  • Lightning mark — the marked player is struck 3 s later.
  • Reinforcements: boars and necks, and a herd leader — a 2★ boar with triple health.

The Elder

  • Greydwarf nests hold his shield.
  • Roots — roots burst out around the marked player.
  • Seeds — his projectiles sometimes take root and grow a new nest.
  • Living bark (phase): Sap — only slashing hits (axes, swords) get through;

Back — armored in front, full damage from behind: the tank keeps him facing away from

the group.

  • Shamans heal him — kill them first.
  • Reinforcements: a troll, a bear, greydwarf elites, a skeleton and a ghost.

Bonemass

  • Bone piles hold his shield.
  • Leeches come out of the water nearby; poison pools under marked players; his

hits leave you Wet, later Tared.

  • Merging — blobs crawl towards him from afar, and each one that reaches him heals

him. Intercept them.

  • Phases: Hardening

Install & use Install: BepInEx plugin

  1. The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
  2. Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
  3. Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
  4. Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.

Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file. In multiplayer, the host and every client need the same mods installed.

Dependencies

Install these first, or the mod will not work:

denikson-BepInExPack_Valheim

File & checksum

Filename
ExtendedBosses-0.8.11.zip
File size
177.5 KiB