Players can discover a total of five Netherworld Energy upgrades during their missions, raising the total to eight. Additionally, by equipping the Ashen Wolf set, which is craftable at the Blacksmith, or the Fallen Star’s Set, available as a pre-order bonus, you can enhance this total to nine.
It’s crucial to note that you will gain an extra Netherworld Energy only when you wear all five pieces of the corresponding armor set, fulfilling the requirements for the set attributes.
Comprehensive Guide to Netherworld Energy Locations in The First Berserker: Khazan
1. Netherworld Energy Upgrade – Forgotten Temple
To locate the first upgrade, navigate to the Forgotten Temple Entrance (Blade Nexus) located in Embars Ruins. Ascend the staircase to reach a hall where you will face Dragonkin enemies for the first time. Defeat the three foes who appear to be mesmerized by the remains of a Dragonkin suspended from the ceiling.
After dispatching them, take the right staircase and immediately make a right turn through a small gate. Here, engage two Dragonkin archers before descending toward a Bard who is playing a lovely melody. This Bard offers various items for sale, including the Primeval Regression Orb.
Next, return and head to the left to discover a glowing item; this is your Netherworld Energy upgrade along with an Earth Enhancer.
2. Netherworld Energy Upgrade – Strange Stench
From the Collapsed Mine (Blade Nexus) in Skoffa Cave, head directly towards the ladder and climb it—beware of the bats that may knock you off. Once on the wooden beam, drop onto the wooden plank where some spiders await. Clear them out before proceeding along the opposite beam.
Cautiously navigate further along the beam, encountering another swarm of bats and a second batch of spiders. Ascend the beam once more and, upon reaching the third group of bats, take a left turn to discover the second Netherworld Energy upgrade.
3. Netherworld Energy Upgrade – Devoured Village
Begin at the Underground Water Facility (Blade Nexus) in El Ravaca Village. You may choose to bypass the Revenant Devourer as you head straight for the ladder ahead, which leads into a tunnel. Upon exiting the tunnel, you can open a shortcut to the Blade Nexus before taking a left along the main path.
Traverse through the spider-laden rooms until you find another ladder leading up to a new tunnel. Follow the left wall to an area filled with two spiders and a shimmering item in the distance. Defeat the spiders to claim a Lightning Enhancer along with the third Netherworld Energy upgrade.
4. Netherworld Energy Upgrade – Atlante the Precise
Travel to the Destroyed Ruins (Blade Nexus) in Wastus Canyon. After your conversation with Bellerian, you will soon confront an Undead Renowned Warrior’s Shadow—along with an elite variant of this enemy. Defeat both, ensuring to strike them again while they’re down to prevent resurrection. Progress forward to spot a vase; beside it lies the glowing item, granting you the fourth upgrade for your Netherworld Energy.
5. Netherworld Energy Upgrade – The Vow
Advance through the Bonus Mission until you reach the Forbidden Passage (Blade Nexus) nestled within the Great Temple Underground Ruins. Follow the main route, where you’ll soon face an elite adversary. After dealing with it, proceed through the door before you. Veer left, continue along the path until it splits, and ignore the left path, opting instead to move right into a room filled with fortified enemies.
After navigating through those foes, return to the main path where you’ll encounter another split. Taking the left path leads to a Jarling, but the primary route to follow is to the left. Continue on until you reach a chamber containing an Undead Ice Archer and two Undead Shieldbearers. By sticking to the left wall, you will find the glowing item that represents the fifth and final upgrade for your Netherworld Energy.