Optimizing OS Tuning & OST Chips

Learn how to optimize your AC's capabilities with OS Tuning and OST Chips in Armored Core VI: Fires of Rubicon. Discover system unlocks, core expansions, and damage control upgrades.

OS Tuning allows you to enhance your AC's capabilities by spending OST chips, which are earned by winning arena battles. There are a total of 197 OST chips available. OS Tuning offers various upgrades, including Core Expansions, damage/defense modifiers, and health recovery increases.

System Unlocks

• Boost Kick: Performed by clicking L3 while Assault Boost is active. Inflicts heavy damage using AC's weight and Assault Boost speed.
• Weapon Bay: Allows equipping Arm weapons on shoulders, activated by L1 or R1. Equippable weapons become available in combat.
• Weight Control: Enables purging of weapons by pressing Left + L2/R2/L1/R1. Useful for discarding obsolete weapons or increasing speed.
• Manual Aiming: An advanced upgrade for increased accuracy without auto lock-on. Hold R3 to enable and disable.
• Quick Turn: Allows a very fast movement in the desired direction by pressing Circle + Left Stick. Useful against fast opponents.

Core Expansions

• Assault Armor: Creates a pulse explosion around the AC when L3 + Triangle are pressed. Deals damage and negates incoming fire.
• Pulse Protection: Creates a pulse shield when Triangle + L3 are pressed. The shield is fixed in position and provides cover until it expires.
• Pulse Armor: Similar to Pulse Protection, activated by Triangle + L3. The pulse barrier follows the AC's trail.
• Terminal Armor: A passive ability that allows the AC to survive a fatal blow (AP at 0) with a temporary pulse barrier.

Attack Control

• Kinetic Weapons - Fire Control Tuning: Increases kinetic weapon damage (excluding melee). Tiers 1-5 provide +3% to +15% damage.
• Explosive Weapons - Fire Control Tuning: Increases explosive weapon damage (excluding melee). .
• Energy Weapons - Output Control Tuning: Increases energy weapon damage (excluding melee). .
• Melee Weapons - Drive Control Tuning: Increases melee weapon damage. Tiers 1-3 provide +5% to +15% damage.
• Direct Hit Modifier - Damage Tuning: Increases precision and direct hit damage against staggered enemies. Tiers 1-3 provide +5% to +15% damage.
• Access Speed - Optimization: Increases access speed for hacking and override actions. Tiers 1-2 provide +50% and +100% speed.

Damage Control

• ACS - Dynamic Deflection Control Tuning: Reduces incoming damage. mitigation.
• Repair Kits - Optimization: Improves repair kit effectiveness. Tiers 1-4 add +500 to +2000 AP to heals.