How to defeat Bio-Bulkhead in Borderlands 4

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Borderlands 4Bio-bulkhead is one of the first bosses he fights in the game, and the grasping hook is of fundamental importance to get to the boss. Unlike everything you have encountered in the game so far, Bio-Bulkhead will not be defeated, just shooting at everything you have.

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In ours Borderlands 4 Guide, we explain How to overcome bio-bulkheadalong with the prizes you get from this fight.


Location Bio-Bulkhead in Borderlands 4

You must overcome Bio-Bulkhead to achieve progress in the campaign, because it is the last boss in Task “One Fell Swoop”. The task does not end right after the fight, but you do not have other bosses until the last moment of this mission.

Photo: Gearbox/2K software via Polygon

To find Bio-Bulkhead, you need to attack the Sola production facility in a synthetic nave that finds Borderlands 4 Interactive map to find it). Help in the middle to go to the laboratory. You will find a door protected with an impenetrable shield. To break it, you need to utilize an air canal northwest of the room to access the laboratory.

Screenshot of 4 Borderlands showing where players find the locusts capsule to open the gate during the mission "One Fell Swoop" Photo: Gearbox/2K software via Polygon

Kill enemies and activate the lever to get a locust sample. Now, You must utilize a hook with grabbing to catch the capsule and throw it at the gate. Repeat the same process in the room in which it is Zadra.

Go forward to find a few vending machines in front of the boss’s arena.


Bio-Bulkhead’s Moveset

In addition to Bio-Bulkhead, there will be several Androids who sporadically weld. Although these androids can be quite annoying, you should always try to keep one alive in case you are in the “fight for your life” mode and you have to kill the enemy to go back to your feet.

Installation of two images of Borderlands 4 images showing the Bio-Bulkhead health belt and the way they can determine if the boss has his shield up Graphics: Paulo Kawanishi/Polygon | Source paintings: Gearbox/2K software via Polygon

The main mechanic to which you should pay attention to Bio-Bulkhead shield. You can determine if the shield is able to check the Bio-Bulkhead health belt. Whenever it has lines exceeding the health belt, this means that the boss will not cause any damage.

Installation of two Borderlands paintings 4 images showing where players can find locusts capsules while fighting Bio-Bulkhead Graphics: Paulo Kawanishi/Polygon | Source paintings: Gearbox/2K software via Polygon

To temporarily destroy the bio-bulkhead shield, you need to throw a locust capsule at it. Some can be found in the northern part of the lower level and southern upper level. There are no visual tips or audio indications when the shield returns, but from our experience the boss regained it three times during the fight.

During the fight, Bio-bulkhead will chase youThat you can just stay away from it and shoot, going backwards. You can utilize stairs and pillars in the arena to create a space between you and boss, finding a cover from Android shots.

Borderlands 4 screenshot showing bio-bulkhead boss Photo: Gearbox/2K software via Polygon

Bio-bulkhead can contact you quickly, so be ready to get off the attacks and keep a protected distance. The boss’s delicate point is his headSo try to maximize damage.

Below you will find a more detailed explanation of his movement:

  • Stroke attack: Bio-Bulkhead jumps on the spot and creates a shock wave around it. The area in which it lands is filled with electricity, which you also want to avoid. If you are far enough from the boss, this attack is not a problem. However, if Bio-Bulkhead uses an ankle after closing the gap, you should utilize the backpack to move and withdraw from it.
  • Frontal height wave: When hitting the ground with both hands, Bio-Bulkhead forms shock waves. Because these waves travel long distances from the place where the boss is, an attempt to escape from them is not very effective. Make yourself to slip and throw sideways.
  • Blue missile: The boss hits his fists to create a blue missile that flies forward after the S -shaped pattern. It is tough to avoid it. Try to practice when it is approaching. There are two varieties of this attack, one with one missile and the other with two.
  • Gap closer: When you are far from the boss, it can go to the place where you are. Although you can avoid this attack by acting, the best strategy is the actual acceleration in the direction from which it comes.

Bio-Bulkhead Rewards

Beating Bio-Bulkhead rewards you with experience points and pistolsAnd like other boss fights, you can repeat it by paying a certain Moxxi machine. When we fought for the first time, at level 15, we won 486 XP. At level 35 in the 1 Mode Ultimate Vault Hunter ranking we received 2080 experience points.

Screenshot of 4 Borderlands showing pistols jumping from the Bio-Bulkhead body after its definition Photo: Gearbox/2K software via Polygon

Although the drops are random, we know that you can get the following legendary drops: Sho Kunai, waterfall grenades and a gun of budget deities. There is also an open red chest after the fight. What you get from it changes every time, but there is a good chance of obtaining a good loot from this type of chest.


Do you need more lend a hand Borderlands 4? For those who are modern in Cairos, check our beginner guide before you start and our best class guide to find the right game style.

If you want to have fun with weapons, read our guide on how to get more SDU tokens. We know that the displacement of a huge map of Kairos is a challenge in itself, so you should prioritize the unlocking of the vehicle, as well as speedy travel points. And if you already like the final game Borderlands 4Do not forget to check the weekly reset time for all current challenges.

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