Arknights: Endfield Sui Build Guide: Roles, Gear, and Rotations

To build Sui in Arknights: Endfield, first decide whether she will serve as your primary on-field damage carry or as an elemental support for Ice or Fire teammates. If your squad lacks a dedicated carry, build her for sustained personal damage. If your roster already features an established Ice or Fire hyper-carry, build her with energy efficiency and elemental utility to amplify their burst damage.

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Skill Upgrade Priority

Sui relies on frequent ability casting and elemental uptime. Allocate upgrade materials in the following order to maximize combat returns:

1. Core Active Abilities: Prioritize her primary active skills first. These skills generate combat energy, control standard enemy waves, and apply initial elemental statuses.
2. Ultimate Ability: Level her ultimate immediately alongside or right after her active skills. This provides her largest burst damage multiplier as a carry and serves as the primary priming window for team burst phases.
3. Passive and Utility Nodes: Invest in passive nodes after active abilities reach basic performance targets to boost baseline scaling and elemental synergies.
4. Basic Attacks: Keep basic attacks at low priority unless you play Sui strictly as an on-field main DPS who must weave standard strikes between cooldown intervals.

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Gear and Weapon Stat Priorities

Do not attempt a hybrid build. Spreading stats between pure offensive scaling and utility reduces her output in both roles. Match your weapon choice and gear substats strictly to her assigned duty.

• Main DPS Weapons: Choose weapons that provide Attack, Critical Rate, or percentage-based damage amplifications triggered by skill activation.
• Support Weapons: Choose weapons that provide skill recharge rates, elemental application bonuses, or team-wide attack buffs triggered by ability use.

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Combat Rotations

Sui's field time and ability sequencing depend on whether she deals the bulk of the damage or enables another carry.

Main DPS Rotation

1. Trigger defensive shields or stat debuffs using your off-field supports.
2. Switch to Sui and cast her core elemental skill to tether targets and apply elemental status.
3. Weave basic attacks to fill short cooldown gaps.
4. Unleash her ultimate ability for burst damage.
5. Cast secondary active skills to harvest elemental particles and refund energy for the next cycle.

Ice or Fire Support Rotation

1. Group enemies with your primary crowd-control unit.
2. Switch to Sui immediately.
3. Cast her elemental zone and support skills to inflict Ice or Fire vulnerability.
4. Swap immediately to your primary damage carry to consume the buff window before it expires.

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Potential Milestones and Team Synergy

Sui functions fully at base investment, but her Potentials provide distinct power thresholds depending on your budget:

• Early Potentials: Lower skill cooldown friction and reduce energy requirements. These are the recommended stopping points for budget and free-to-play players who need consistent skill cycling without over-investing in energy gear.
• High-Tier Potentials: Provide direct damage multiplier increases and expand the damage buffs she grants to allied Ice and Fire attacks, rewarding heavy investment for endgame boss encounters.

Team Archetypes

• Ice Synergy Team: Pair Sui with dedicated Ice carries, crowd-control units, and an energy battery. Sui either shatters frozen targets as the main carry or applies continuous Cold effects to enable another Ice unit's burst window.
• Fire Synergy Team: Run Sui alongside Fire burst attackers. Her skill application sustains combustion effects over time while managing enemy spacing.
• Dual-Element Team: Combine Sui with one Ice enabler and one Fire damage dealer to tackle encounters featuring mixed elemental shields or shifting enemy resistances.