The First Descendant E Buster SMG Ines Gun Mastery Guide

 


Ines E Buster SMG Support And DPS Guide

This guide is a complete, practical walkthrough for mastering the E Buster submachine gun on Ines in The First Descendant. It explains the weapon’s unique mechanics, the best way to allocate cores and mods, how to tune substats, and how to play Ines around the gun to deliver both support and high sustained DPS. You’ll get recommended builds for early, mid, and endgame, clear mod priorities, and advanced tactics for boss fights and group content. The guide also includes a focused FAQ to answer common questions and help you adapt the build to your available gear.

Why E Buster matters for Ines and how it changes her role

The E Buster SMG is designed to amplify Ines’ electric skill output while also functioning as a potent multi‑hit firearm. Its signature mechanic, Entropy Rounds, interacts with Ines’ tracking projectile skills to grant stacked increases to Electric Skill Power and to add special rounds that scale with firearm ATK. That dual nature lets Ines flex between a support amplifier—boosting team electric damage—and a self‑sufficient DPS option that benefits from weapon scaling and multi‑hit synergies. This makes the E Buster uniquely valuable: you can build for skill power to maximize team buffs, or lean into firearm ATK and multi‑hit damage to make Ines a primary damage dealer in certain encounters.


Understanding Entropy Rounds and the unique ability

At the heart of the E Buster’s power is its unique ability that generates Entropy Rounds when you activate a Tracking Projectile type skill. Each activation increases Electric Skill Power for a duration and can stack, while the Entropy Rounds themselves apply additional firearm damage multipliers on hit. In practice this means that every time Ines fires a tracking projectile, the weapon both buffs her electric skills and converts some of that energy into high‑scaling rounds that benefit from firearm ATK and multi‑hit mechanics. Because the buff stacks, repeated activations in a short window are the key to unlocking the weapon’s full potential. This makes rotation timing and skill usage central to the build’s effectiveness.

Core and substat priorities explained

When choosing cores and substats for the E Buster, prioritize attributes that directly amplify the weapon’s strengths. The most impactful substats are Multi‑Hit Damage, Firearm ATK, Multi‑Hit Chance, and Rounds Per Magazine. Multi‑Hit Damage multiplies the benefit of the weapon’s special rounds, while Firearm ATK scales the base damage of Entropy Rounds. Multi‑Hit Chance increases the frequency of extra hits, which is crucial because the E Buster’s damage model leans heavily on repeated small hits stacking into massive totals. Rounds Per Magazine is flexible but valuable: more rounds mean longer uptime for Entropy Rounds and fewer reload interruptions during burst windows. For cores, aim for ones that boost Multi‑Hit Damage and Firearm ATK first, then look for cores that add Rounds Per Magazine or Sprint Speed as situational picks.

Mod selection and why each slot matters

The E Buster’s mod layout should be built around two goals: maximize the weapon’s raw damage output and increase the chance and effectiveness of multi‑hit procs. The recommended mod set that balances bossing and mobbing includes damage amplification, multi‑hit enabling mods, and a final elemental or utility mod. Typical high‑value mods are: Action and Reaction, Charge Amplification, Rifling Reinforcement, Sharp Precision Shot (for bossing) or Sweeping Squad (for mobbing), Multi‑Bullet, Multi‑Percussion, Multi‑Piercing Sights, Multi‑Pierce Fire, and Multi‑Piercing Support or Fire Rate UP depending on whether you need magazine capacity or raw burst. The first four mods push the weapon’s base damage and critical behavior; the middle mods stack multi‑hit chances and extra projectiles; the last slot is flexible for elemental damage or rate of fire. This configuration turns the E Buster into a relentless multi‑hit machine that also buffs Ines’ electric skills.

Early game build and progression path

Start with a pragmatic approach: prioritize mods and cores you can reliably craft or farm. Early on, equip the E Buster with basic damage and multi‑hit mods you find, and focus substats on Firearm ATK and Multi‑Hit Chance. Don’t chase perfect rolls immediately; instead, learn the weapon’s rhythm and how Entropy Rounds interact with Ines’ skills. As you progress, replace early mods with the recommended midgame set and begin shifting cores toward Multi‑Hit Damage and Rounds Per Magazine. Use infiltration operations and event content to farm blueprints and upgrade materials. The weapon’s blueprint is obtainable from specific infiltration operations in the Axion Plains, so prioritize those runs when the blueprint is available to you.

Midgame tuning and playstyle adjustments

Once you have a few core upgrades and better mods, refine your playstyle. The E Buster rewards aggressive, rotation‑based play: open with a tracking projectile to stack Entropy quickly, then follow with short bursts from the SMG to consume Entropy Rounds and apply multi‑hit damage. Keep moving; the SMG’s mobility lets you kite and maintain uptime while avoiding telegraphed boss mechanics. If you’re in a group, coordinate with teammates who can apply elemental weaknesses or crowd control so your multi‑hit barrage lands on vulnerable targets. At this stage, you should be comfortable toggling between support and DPS roles: if your team needs electric amplification, prioritize skill casts to stack the Electric Skill Power buff; if you need to push a boss phase, lean into firearm scaling and multi‑hit mods.


Endgame optimization and perfect rolls

Endgame optimization is about squeezing every percent of damage and utility from the E Buster. Aim for weapon substats that read: Multi‑Hit Damage (highest), Firearm ATK, Multi‑Hit Chance, and Rounds Per Magazine. For cores, lock in Multi‑Hit Damage and Firearm ATK as primary picks; secondary cores can be Rounds Per Magazine or Sprint Speed depending on your playstyle. Mod choices should be the best versions of the midgame list, with Sharp Precision Shot for bossing and Sweeping Squad for clearing. If you have access to endgame augmentations or unique mod variants, prioritize those that increase multi‑hit proc rate and the damage multiplier applied by Entropy Rounds. At this level, small percentage gains compound dramatically because the weapon’s damage model multiplies across many hits.

How to rotate skills and weapon fire for maximum stacks

A reliable rotation is the backbone of the E Buster playstyle. Start by activating a Tracking Projectile skill to generate an initial stack of Entropy. Immediately follow with a short burst from the E Buster to consume Entropy Rounds and apply multi‑hit damage. If your tracking skill has a cooldown, weave in other abilities or movement to maintain pressure while waiting for the next tracking shot. In group content, coordinate with teammates so that your tracking projectile coincides with their burst windows; this ensures the Electric Skill Power buff lines up with allied damage spikes. For boss phases where you need sustained damage, alternate tracking activations with 2–3 second SMG bursts to keep stacks high without wasting reload time. Timing is everything: too many tracking activations without firing wastes potential Entropy Rounds; too much firing without tracking reduces the buff stacking that makes the weapon shine.

Positioning and movement tips for Ines with E Buster

Ines benefits from mobility; the E Buster’s magazine and fire rate let you reposition between bursts. Use strafing and short dashes to avoid telegraphed attacks while keeping your aim on the boss. For adds and mobbing, circle strafe to maximize multi‑hit application across multiple targets. When facing single big targets, maintain medium range to allow tracking projectiles to home and to give Entropy Rounds room to apply their multi‑hit pattern. If you need to retreat to heal or reposition, do so between reloads to avoid losing burst windows. Sprint Speed cores can be a subtle but meaningful QoL pick if you find yourself frequently out of position.

Team composition and synergy

The E Buster build for Ines pairs best with teammates who either amplify elemental damage or provide windows for concentrated fire. Characters that can apply electric debuffs, increase enemy vulnerability, or provide crowd control will let your multi‑hit rounds land more consistently and stack higher. Support characters that can extend buff durations or reduce skill cooldowns are also excellent partners because they let you stack Entropy more often. In raid or infiltration content, coordinate your tracking projectile timing with ally burst phases so the Electric Skill Power buff lines up with the team’s highest damage output. Conversely, if your team lacks electric synergy, you can still run a firearm‑heavy E Buster build and focus on raw multi‑hit DPS.

Consumables, augmentations, and situational tweaks

Don’t neglect consumables and temporary buffs. Damage potions, skill cooldown reducers, and magazine boosters can all increase your effective uptime and stacking potential. Augmentations that increase Multi‑Hit Chance or Firearm ATK are particularly valuable. For encounters with heavy elemental resistances, swap the final mod slot to an element that the boss is weak to, or use a neutral physical mod if no elemental advantage exists. If you’re struggling with reload downtime, prioritize Rounds Per Magazine or Fire Rate UP to smooth your damage output. Small situational tweaks often make the difference between a clean phase and a wipe.

Troubleshooting common problems

If your E Buster feels weak, check these common issues: you lack Multi‑Hit Damage or Firearm ATK substats; your mod choices are too focused on crits (the weapon scales poorly with crit on base); you’re not timing tracking projectiles to generate Entropy; or your magazine size is too small for sustained windows. Fix these by re‑rolling substats toward Multi‑Hit Damage, swapping out crit‑centric mods for multi‑hit and damage amplification mods, and practicing the rotation until stacking becomes second nature. If you’re dying frequently, reduce your aggression and use mobility cores or defensive mods until you can consistently maintain stacks without taking unnecessary damage.


Build examples

Versatile midgame build: cores focused on Firearm ATK and Multi‑Hit Chance, mods: Charge Amplification, Rifling Reinforcement, Multi‑Bullet, Multi‑Percussion, Multi‑Piercing Sights, Multi‑Pierce Fire, Multi‑Piercing Support. Substats: Multi‑Hit Damage, Firearm ATK, Rounds Per Magazine.

Endgame boss build: cores: Multi‑Hit Damage x2, Firearm ATK; mods: Action and Reaction, Charge Amplification, Sharp Precision Shot, Multi‑Bullet, Multi‑Percussion, Multi‑Piercing Sights, Fire Rate UP. Substats: Multi‑Hit Damage, Firearm ATK, Multi‑Hit Chance, Rounds Per Magazine.

Support hybrid build: cores: Firearm ATK, Rounds Per Magazine; mods: Charge Amplification, Rifling Reinforcement, Sweeping Squad, Multi‑Bullet, Multi‑Percussion, Multi‑Piercing Sights, Basic Elemental Mod. Substats: Skill Power, Multi‑Hit Chance, Rounds Per Magazine.

How to farm the blueprint and upgrade materials efficiently

Target infiltration operations and event rotations that drop the E Buster blueprint and its upgrade materials. Prioritize runs that you can clear quickly and consistently; speed and repetition beat rare perfect rolls. Use matchmaking or a small, coordinated group to clear the specific Axion Plains infiltration that contains the blueprint when it’s available. Save upgrade materials for the mods and cores that give the largest marginal gains—usually Multi‑Hit Damage and Firearm ATK—and avoid spending on cosmetic or low‑impact upgrades early.

Final checklist before you queue for high difficulty content

Confirm your E Buster has: high Multi‑Hit Damage, solid Firearm ATK, at least one Rounds Per Magazine roll, and a mod set that emphasizes multi‑hit and damage amplification. Practice your rotation until you can reliably stack Entropy three to five times in a single window. Coordinate with teammates about burst windows and elemental synergies. Bring consumables that boost skill uptime or magazine size. If all of that is in place, you’ll be ready to push the weapon’s limits in endgame content.


FAQ

Q What exactly triggers Entropy Rounds and how many stacks can I get? A Entropy Rounds are generated when you activate a Tracking Projectile type skill; each activation grants a stack of the Electric Skill Power buff and produces special rounds that scale with firearm damage. The weapon’s description and testing indicate the buff stacks and that Entropy Rounds scale heavily with firearm ATK and multi‑hit multipliers.

Q Should I invest in crit chance and crit damage for E Buster? A No. The E Buster’s base kit has low crit baseline and its damage model favors multi‑hit and firearm ATK scaling. Invest in Multi‑Hit Damage, Multi‑Hit Chance, and Firearm ATK instead for far better returns.

Q Can other characters use E Buster effectively? A Yes. While tuned for Ines, the E Buster’s multi‑hit mechanics and Entropy Rounds make it viable on other characters who benefit from repeated small hits or who can trigger tracking projectiles. However, the synergy with Ines’ electric skills is what unlocks the weapon’s full potential.

Q Is the E Buster better for mobbing or bossing? A It can do both. Use Sweeping Squad and magazine‑focused mods for mobbing; switch to Sharp Precision Shot and single‑target damage amplification for bossing. The weapon’s multi‑hit nature makes it excellent at shredding groups, while its stacking buff and high scaling allow it to shine on bosses when properly tuned.

Q What if I don’t have perfect cores or mods? A Play to your strengths: prioritize the most impactful substats you can get, practice the rotation, and gradually replace weaker mods as you farm better ones. The weapon is forgiving to incremental upgrades; consistent play and smart choices beat perfect gear you don’t know how to use.

This guide synthesizes practical play tactics, recommended gear paths, and the core mechanical understanding you need to make the E Buster SMG a defining part of your Ines toolkit. Focus on stacking Entropy through tracking projectiles, prioritize Multi‑Hit Damage and Firearm ATK in your cores and substats, and tune your mods to the encounter type. With practice and the right farm targets, the E Buster turns Ines into a flexible powerhouse that can both amplify team electric damage and carry heavy single‑target phases.


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