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Valheim Bonemass guide: how to summon and defeat BonemassHow to find, summon, and defeat Bonemass
How to find, summon, and defeat Bonemass
OurValheim Bonemass boss fight guidewill explain exactly how to locate, summon, and kill Bonemass. We’ll also walk you through the unique rewards you’ll earn after slaying it.
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Valheim Bonemass boss location
Bonemass, like the other Valheim bosses, does not appear somewhere in the world at the start of a game. Instead, it must be summoned at a Bonemass Mystical Altar, of which there are several scattered across eachValheim map. To find the nearest such Mystical Altar, you’ll need to find and interact with a Vegvisir - a glowing red runestone which will transcribe the Altar location on your map.
Bonemass resides in the Swamp biomes, so you’ll need to look for runestones in Swamps- specifically in the Sunken Crypts found in certain Swamp biomes. You’ll need to have defeated the previous boss,The Elder, in order to gain access to these Sunken Crypts.
Once it’s marked on the map, travel there to find Bonemass’s Mystical Altar - a giant skull sticking out of the ground.
How to summon Bonemass in Valheim
Like all bosses, to summon Bonemass you’ll need to make an offering at its Mystical Altar. In this case, you need toplace 10 Withered Bones on the Altarto summon the boss into the world.
Withered Bones can be found inexactly the same places as Iron: in Muddy Scrap Piles and in Sunken Crypts. You may need to scout more than one Sunken Crypt in order to find 10 Withered Bones, but once you have them you should return to the Bonemass Altar. Place the Bones in your hotbar and press the corresponding number key with your cursor placed over the Altar to summon Bonemass and begin the boss fight.
Valheim Bonemass boss fight guide
You’ll also want plenty of Health and Stamina, so I’d recommend eating good-quality Cauldron-tier foods in order to reach around 150 max Health. Take somePoison resistance meadas well, because that extra resistance will certainly be useful for this fight. As for armor, the stronger the better. You’ll ideally have moved on from Leather or Troll Hide at this point and will be wearing Bronze or Iron armor.
As for the boss fight itself, Bonemass is a great big blob that loves to spawn enemies and spew poison. If you get close it’ll take a swipe at you which you should be sure to block or evade, but really it’s the poison that will kill you if anything.
With good gear and Health - and of course, the Poison resistance mead - the poison shouldn’t be too punishing as long as you don’t stand in it for too long. Keep clubbing away at Bonemass whenever you aren’t in danger of being poisoned, and with a bit of perseverance you’ll defeat it and reap the following rewards.
Bonemass Forsaken Power & loot drops
After defeating Bonemass, head over to its remains to pick up what it drops: a Bonemass Trophy to unlock its Forsaken Power, and the Wishbone.
Return the Trophy to the circle of stones at spawn and place it on the third stone’s hook, then interact with the stone to gain Valheim’s third Forsaken Power. This power grants you resistance to physical (blunt/slash/pierce) damage, meaning you take less damage from attacks of these types.
And with that, we’ll conclude this Valheim Bonemass boss guide. Hopefully you’ve learned everything you need to know about finding and defeating this dangerously gaseous foe. For more information on the other bosses in the game, check out ourValheim bosses guide.
