Armored Core 6 Sea Spider Boss Guide

Want to complete the Ocean Crossing mission in Armored Core 6, but Sea Spider is preventing you from getting into the cargo ship? Don't worry, I'm here to help.

Armored Core 6 features many bosses in Chapter 2, and Sea Spider is one of them. You will encounter Sea Spider before boarding the cargo ship during the Ocean Crossing Mission. Up until this point, you took down every enemy with ease. The Sea Spider in AC6 will be the first to challenge your skills seriously.

Best Build to defeat Sea Spider

To defeat Sea Spider in Armored Core 6, I will use a heavy build like a tank. You will get many items by playing missions before you face the Sea Spider boss in AC6. But some must be purchased, and you should have a budget of around 1.4 million COAMs.

Following are the details about the AC6 Sea Spider build:

Right-Arm Weapon                    DF-GA-08 HU-BEN
Left-Arm Weapon                      DF-GA-08 HU-BEN
Right-Shoulder                           SONGBIRDS
Left-Shoulder                            SONGBIRDS
Head                                           HD-012 MELANDER C3
Core                                           DF-BD-08 TIAN-QIANG
Arms                                      AR-012 MELANDER C3
Legs                              LG-022T BORNEMISSZA
Generator                               VP-20S
FCS                                FC-006 ABBOT
Expansion                               Terminal Armor

How to beat Sea Spider in Armored Core 6

When you face off, don’t wait for the right moment. Start using your weapons and lock AC6 Sea Spider in. As your build is heavy, you must stay close to Sea Spider, as it will deal more damage and land with better accuracy.

Use a staggering attack strategy

Fire your arms and shoulder weapons at Sea Spider. In the beginning, you will also take damage, but a while later, you will start to dominate and stagger him.

Once he is staggered, your attacks will deal more damage. Try to get near him and land your best shots, especially with the Gatling Gun in Armored Core 6, as it is best for close range.


Learn to dodge Laser Attacks

When one-third (1/3) of its health is left, the AC6 Sea Spider will start to fly. This will challenge you as now you will lose some accuracy because of the long range. However, the key component here will be your survivability.

You will have low AP and short on Repair Kits. Try to dodge his laser and missile attacks by boosting, jumping, and moving left and right.

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Ali is a passionate RPG gamer. He believes that western RPGs still have a lot to learn from JRPGs. He is editor-in-chief at but that doesn't stop him from writing about his favorite video ...