Armored Core 6: Fires of Rubicon - Best OS Tuning Upgrades to Get

Best OS Tuning upgrades to get guide for Armored Core 6: Fires of Rubicon (AC6/Armored Core VI), including recommended System Unlocks, Core Expansion, and Atttack Control OS to get, best OS for early game, and how to respec OS Tuning and refund OST Chips.

Armored Core 6: Fires of Rubicon (AC6) - Best OS Tuning Upgrades to Get

Best Tuning Upgrades to Get for Armored Core 6: Fires of Rubicon

Armored Core 6: Fires of Rubicon OS Tuning List and Guide

Trophies and Achievements

Below are all the trophies and achievements related to this guide and how to unlock them in the game.

Trophy How to Unlock
PlayStation 4 - Gold TrophyAsset Holder Performed all OS upgrades.
PlayStation 4 - Bronze TrophySoftware Engineer Upgraded your AC’s OS.

Armored Core 6: Fires of Rubicon Trophy and Achievement List

Recommended System Unlocks OS

No. Upgrade Priority
1 Boost Kick ★★★★★
2 Weapon Bay ★★★★
3 Weight Control
4 Manual Aiming ★★
5 Quick Turn

Recommended Core Expansions OS

No. Upgrade Priority
6 Assault Armor ★★★
7 Pulse Protection ★★★
8 Pulse Armor ★★★★
9 Terminal Armor

Recommended Attack Control OS

No. Upgrade Priority
19 Kinetic Weapons – Fire Control Tuning ★★★
11 Explosive Weapons – Fuse Control Tuning ★★★
12 Energy Weapons – Output Control Tuning ★★★
13 Melee Weapons – Drive Control Tuning ★★★
14 Direct Hit Modifier – Damage Tuning
15 Access Speed – Optimization
16 ACS – Dynamic Deflection Control Tuning
17 Repair Kits – Optimization

Best Early Game OS Tuning Upgrades

OS Name Description Cost and Details
Boost Kick (System Unlocks) Unlocks the ability to perform a Boost Kick. Boost Kicks hit with heavy impact by combining the speed of an Assault Boost with the sheer weight of the AC.

Press L3 during Assault Boost: Boost Kick

Requires 1 OST Chip to unlock.

Useful kick move that can be used during Assault Boost. You can throw out this move as many times as you want.

Despite being quite difficult land sometimes, it can build up a significant amount of ACS load on the enemy that you hit with it. Boost Kick is also cheap to unlock at 1 OST Chip, making it good to get in the early game.

Quick Turn (System Unlocks) Unlocks the Quick Turn feature, allowing the AC to perform snap turns to side or rear directions.

○ + Tilt Left Analog Stick: Quick Turn

Requires 1 OST Chip to unlock.

Getting Quick Turn vastly improves the mobility of your AC as it allows you to change directions at high speed (either to the side or to any opposite direction).

Unlocking Quick Turn also makes Assault Boost a little easier to control.

Pulse Armor (Core Expansion) Unlocks Core Expansion: Pulse Armor and allows it to be installed. Pulse Armor creates a pulse barrier that trails the AC, dramatically increasing defensive performance until it exceeds its durability or time limit.

L3 + △: Activate Pulse Armor

Requires 4 OST Chips to unlock.

Most versatile and reliable survivability option out of all Core Expansion upgrades, especially during boss battles.

ACS – Dynamic Deflection Control Tuning (Attack Control) Improves the precision of ACS-based bracing posture control, reducing damage received from enemy attacks. This OS is extremely useful since you will be learning how to avoid getting hit when going through the main missions for the first time. Being able to reduce damage taken is always good.

Maxing out this upgrade gives you up to 15% total damage reduction which is recommended as you progress through the game’s later missions.

How to Respec OS Tuning Upgrades

Can be reset using COAM.

To respec your ACs OS Tuning upgrades, press  the △ button while on the OS Tuning menu. You will, however, need to pay the COAM fee if you want to get back all of the OST Chips you spent to unlock upgrades. Note that you do not want to be doing this repeatedly as it is a waste of money so try to plan which upgrades suit your playstyle and AC build before purchasing anything.

Armored Core 6: Fires of Rubicon Permanent Events and Missable Features

How to Get OST Chips

Clear Arena mode battles.

OST Chips are rewarded for clearing Arena mode battles for the first time. As you go further into the main story, more rival ACs are unlocked in the Arena so try to spend time taking them down to earn as many chips as possible.

Armored Core 6: Fires of Rubicon Arena Program List and Rewards

Other Armored Core 6 Guides

Armored Core 6 Basic Information

▼Armored Core 6 Basic Information
Version Updates and Patch Notes Pre-Order Bonuses and Game Editions
How Long to Beat Game Controls
PC System Requirements New Features and Gameplay Changes
Can You Upgrade the PS4 Version to PS5? Can You Change the Difficulty?
Is There Human Plus in the Game? Online Multiplayer Features Guide
Does the Game Have Multiple Endings? Is There Multiplayer in the Game?
Is Moonlight in the Game? Is a Demo Coming Out?
Battle Screen UI Guide Is There Co-op Multiplayer?

Armored Core 6 Walkthrough

▼Armored Core 6 Walkthrough
Main Missions List
Post-Game Unlockables
All Endings Guide

Armored Core 6 Useful Guides

▼Armored Core 6 Useful Guides
Trophies and Achievements List Post-Game Unlockables
Permanent Events and Missable Features All Endings Guide
How to Unlock All Parts How to Unlock All Weapons
Best Weapons Best AC Builds
Best Early Game AC Builds Best OS Tuning Upgrades
Best Leg Types Money Farming Guide
All Arena Programs List Loghunt List and Rewards
How to Get S Rank How to Get Moonlight Laser Blade
All Coral Weapons List and Locations How to Get OST Chips
OS Tuning List and Guide Emblem and Decal Guide
AC Stats and Part Specs Guide How to Ignore Overweight Status
How to Upgrade Repair Kit

Armored Core 6 Collectibles Guides

▼Armored Core 6 Collectibles Guides
All Part Container List and Locations All Data Logs List and Locations
All Combat Log List and Locations

Armored Core 6 AC Parts Guides

▼Armored Core 6 AC Parts Guides
All Leg Units Features Summary Bipedal Leg Units Features
Reverse Joint Leg Units Features Tetrapod Leg Units Features
Tank Leg Units Features

Armored Core 6 Boss Guides

▼Armored Core 6 Boss Guides
How to Beat Balteus How to Beat Ayre
How to Beat Smart Cleaner
Armored Core 6: Fires of Rubicon Boss List

Armored Core 6 AC Parts Lists

AC Frame Parts

▼Armored Core 6 AC Frame Parts
Armored Core 6: Fires of Rubicon - HD-011 Melander HeadHead Armored Core 6: Fires of Rubicon - CC-3000 Wrecker CoreCore Armored Core 6: Fires of Rubicon - AC-2000 Tool ArmArms
Armored Core 6: Fires of Rubicon - 2C-2000 Crawler LegsLegs

AC Inner Parts

▼Armored Core 6 AC Inner Parts
Boosters FCS Generator

AC OS Tuning and AC Expansion Parts

▼Armored Core 6 AC Expansion Parts
OS Tuning Core Expansions
Armored Core 6: Fires of Rubicon Parts List

Armored Core 6 Weapons Lists

Weapons by Slot Type

▼Armored Core 6 Weapons (By Slot Type)
Armored Core 6: Fires of Rubicon - MA-E-210 Etsujin Burst Machine GunArm Weapons Armored Core 6: Fires of Rubicon - VP-61PB Pulse BucklerBack Weapons

Weapons by Weapon Type

▼Armored Core 6 Weapons (By Weapon Type)
Handgun Burst Handgun Laser Handgun
Pulse Gun Needle Gun Stun Gun
Machine Gun Burst Machine Gun Gatling Gun
Shotgun Laser Shotgun Bazooka
Detonating Bazooka Grenade Launcher Napalm Bomb Launcher
Jamming Bomb Launcher Stun Bomb Launcher Burst Rifle
Assault Rifle Burst Assault Rifle Linear Rifle
Laser Rifle Plasma Rifle Coral Rifle
Multi Energy Rifle Flamethrower Explosive Thrower
Plasma Thrower Chainsaw Laser Dagger
Laser Blade Laser Slicer Pulse Blade
Laser Lance Light Wave Blade Stun Baton
Pile Bunker Coral Oscillator Spread Bazooka
Grenade Cannon Stun Needle Launcher Laser Cannon
Diffuse Laser Cannon Plasma Cannon Pulse Cannon
Pulse Shield Launcher Light Wave Cannon Missile Launcher
Split Missile Launcher Siege Missile Launcher Dual Missile Launcher
Vertical Missile Launcher Active Homing Missile Launcher Container Missile Launcher
Cluster Missile Launcher Scatter Missile Launcher Detonating Missile Launcher
Needle Missile Launcher Plasma Missile Launcher Coral Missile Launcher
Bullet Orbit Laser Orbit Laser Turret
Laser Drone Pulse Shield Pulse Buckler
Pulse Scutum Coral Shield
Armored Core 6: Fires of Rubicon Weapons List

Armored Core 6 Forum

▼Armored Core 6 Forum
Chat Board Question Board
Bug Report Board

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