OS Tuning in Armored Core VI: A Comprehensive Guide

Overview of OS Tuning
OS Tuning is an integral progression system in Armored Core VI that enhances your Armored Core (AC) units with passive upgrades and unlockable combat abilities. These upgrades can significantly influence gameplay, improving aspects such as offensive capabilities, defensive strength, mobility, and unlocking formidable core expansions like Assault Armor and Terminal Armor.

Unlocking OS Tuning
To access the OS Tuning menu, players must complete either Mission 05: Retrieve Combat Logs or Mission 05-B: Investigate BAWS Arsenal No.2 during Chapter 1. This milestone not only unlocks the OS Tuning system but also opens up the Arena, where players can earn necessary OST Chips for upgrades.

Acquiring OST Chips
OST Chips serve as the currency for OS Tuning upgrades, and they can only be acquired by winning Arena matches. The Arena features various ranked matches from F to S, with higher ranks offering more lucrative OST Chip rewards. Players can expect to receive a total of 98 OST Chips during their first playthrough, with additional chips available in New Game+ cycles, facilitating further upgrades.

Key OS Tuning Upgrades and Recommendations
The OS Tuning system provides diverse upgrade paths that can be categorized into four main areas:

1. Core Expansions (Equip One at a Time)
– Assault Armor: Delivers a potent pulse blast when activated, ideal for aggressive playstyles.
– Pulse Armor: This option creates a temporary energy shield, providing crucial protection in tough engagements.
– Terminal Armor: Activates a last-resort survival shield when HP hits zero, allowing you to have a second chance in tight situations.
– Pulse Protection: This upgrade helps reduce incoming pulse and energy damage, bolstering your defenses against specific attacks.

2. Combat Upgrades
– Boost Kick: Adds a powerful melee attack during quick boosts, allowing for close-quarters engagements.
– Weapon Bay: This ability enables you to swap back-mounted weapons mid-mission, offering tactical flexibility.
– Quick Turn: Enhances turning speed during boosts, which is vital for dodging attacks and repositioning.

3. Damage and Defense Modifiers
– Direct Hit Modifier: Highly recommended for boss encounters as it increases damage dealt to staggered enemies, making it a valuable investment.
– Attack Power Tuning: Increases both melee and ranged weapon damage, enhancing overall offensive output.
– Core Expansion Optimization: Improves the functionality and effectiveness of core expansions.

Respec and Strategy
Players have the option to respec their OST Chips through the “Reset OS Tuning” feature, although this incurs a cost of 500,000 COAM. For optimal strategies, it is recommended to prioritize upgrades that enhance damage output and mobility early on. Investments in Direct Hit Modifier and Assault Armor can yield considerable benefits during boss fights. Following this, players should consider mobility upgrades such as Quick Turn for better maneuverability in combat. As you progress to higher chapters, focusing on higher-rank Arena matches will maximize OST Chip farming efficiency.

New Game+ (NG+) Considerations
In New Game+, previously defeated Arena opponents reset, providing players the chance to farm duplicate OST Chips. This feature greatly enhances the customization of builds for specific missions or player-versus-player (PVP) scenarios, allowing for tailored strategies and playstyles to suit individual preferences.

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By following these guidelines and recommendations, players can effectively navigate the OS Tuning system and significantly enhance their Armored Core capabilities, ensuring a robust gameplay experience in Armored Core VI.