Netherworld Energy in The First Berserker: Khazan is used to heal Khazan whenever players are low on health. There is a fixed amount of these that are available at the start of each mission and can be replenished when interacting with the Blade Nexus. The game starts the player off with three heals that they must use throughout the opening missions of the game. Players can find multiple upgrades for the Netherworld Energy, either hidden away behind a wall or in plain sight. For players missing any upgrades, they can check out the location of each upgrade below.

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There are five Netherworld Energy upgrades that players can find throughout the missions, increasing your total to 8. However, you can increase this to 9 by equipping the Ashen Wolf set, which can be crafted at the Blacksmith, or the Fallen Star’s Set, which was a pre-order bonus.
You will only get another Netherworld Energy if you equip all five pieces of the armor set, completing the requirement for the set attributes.
All Netherworld Energy Locations In The First Berserker: Khazan
Netherworld Energy Upgrade #1 – Forgotten Temple
To find the first Netherworld Energy upgrade, you must progress through the third mission until you reach the Forgotten Temple Entrance (Blade Nexus) in Embars Ruins. Go up the stairs, and you will arrive at a hall, encountering Dragonkin enemies for the first time. Deal with the three enemies worshipping what seems to be the remains of a Dragonkin hung to the ceiling.
Once they are dealt with, go up the right staircase and immediately turn right to go through a small gate. Here, you will find two Dragonkin archers to deal with, after which you can drop down toward the Bard, who is playing a beautiful melody. You can purchase a number of items from him, such as the Primeval Regression Orb.
After that, turn around, and to the left up ahead, you will find a glowing item, which is the Netherworld Energy upgrade, along with an Earth Enhancer.
Netherworld Energy Upgrade #2 – Strange Stench
Head straight towards the ladder from the Collapsed Mine (Blade Nexus) in Skoffa Cave and climb it. Be careful of the group of bats that come your way and try to make you fall down. Walk along the wooden beam and drop down on the wooden plank, where you can see a few spiders. Deal with them, and go forward to walk on the wooden beam on the opposite side.
Going up the beam, be cautious of another group of bats and deal with the second group of spiders. Go up the beam again, and when you encounter the third group of bats, head left to find the second Netherworld Energy upgrade.
Netherworld Energy Upgrade #3 – Devoured Village
Go down the ladder from the Underground Water Facility (Blade Nexus) in El Ravaca Village. You can ignore the Revenant Devourer if you want and head straight for the ladder up ahead to make your way inside the tunnel. Once you exit the tunnel, you can go straight to open the shortcut to the Blade Nexus before going left on the main path.
Go through the spider-infested rooms until you find a ladder that you can climb up into another tunnel. Now, stick along the left wall until you reach a room with two spiders and a glowing item in the distance. Deal with the spiders and loot the item to get a Lightning Enhancer and a Netherworld Energy upgrade.
Netherworld Energy Upgrade #4 – Atlante the Precise
Make your way to the Destroyed Ruins (Blade Nexus) in Wastus Canyon. After talking to Bellerian, you can go ahead and find an Undead Renowned Warrior’s Shadow and an elite version of the same enemy not far from there. Defeat them both, and be sure to hit them again once they are down to prevent them from getting revived. After that, go forward and you will spot a vase, next to which is the glowing item in plain sight. This will reward you with the fourth upgrade for your Netherworld Energy.
Netherworld Energy Upgrade #5 – The Vow
Progress through the Bonus Mission until you reach the Forbidden Passage (Blade Nexus) in the Great Temple Underground Ruins. Follow the main path, and soon you will come across an elite enemy—deal with it and go through the door you can open. Turn left and follow the path until you reach a split. Ignore the path on the left and head right to reach a room with a few empowered enemies. Deal with them, then follow the main path again until you reach another split.
You can go right to find a Jarling, but the main path is on the left. Continue along the main path until you reach a room with an Undead Ice Archer and two Undead Shieldbearers. Hug the left wall, and you will find a glowing item, which is the fifth and final upgrade for the Netherworld Energy.

- Released
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March 27, 2025
- Developer(s)
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Neople
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