Emma: Tactical Upgrade
Fire 
Machine Gun 
Supporter 
Burst 1 
Elysion Tier 3 
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 2.3% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 1.37% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 2.48% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 1.47% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 2.66% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 1.58% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 2.84% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 1.68% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 3.01% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 1.79% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 3.19% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 1.9% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 3.37% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 2% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 3.55% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 2.11% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 3.72% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 2.21% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates at the start of battle. Affects self.
Environment Setup
Function: Sprays a solution into the surroundings to create an advantageous battlefield.
Effect 1: Damage Taken ▲ 3.9% for 10 sec.
Effect 1 Target(s): All enemies (including those that appear during Environment Setup)
Effect 2: Environment Setup: Continuously recovers 2.32% of the skill user's final Max HP every 1 sec for 10 sec.
Effect 2 Target(s): All allies
Recurring interval: 30 sec
■ Activates when the enemy appears. Affects self.
Exposure (Cannot be removed)
Effect: Attract: Taunt all enemies continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 13.89% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 1.37% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 18.3% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 1.83% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 14.96% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 1.47% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 19.71% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 1.97% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 16.03% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 1.58% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 21.12% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.11% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 17.1% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 1.68% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 22.52% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.25% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 18.16% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 1.79% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 23.93% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.39% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 19.23% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 1.9% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 25.34% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.53% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 20.3% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 26.75% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.67% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 21.37% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.11% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 28.16% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.81% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 22.44% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.21% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 29.56% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.95% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
■ Activates only if self is alive.
LT Formation
Function: Issues a battle-advantageous tactic to target(s).
Effect 1: Affects all allies from the same squad. Critical Damage ▲ 23.51% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 2.32% continuously.
Bonus effects when applying AS Formation to self.
Effect 1: Affects all allies. True Damage ▲ 30.97% continuously.
Effect 2: Affects all allies. Projectile Explosion Damage ▲ 3.09% continuously.
Effect 3: Affects self. Exposure activation disabled continuously.
Effect 4: Affects self. Recurring interval of Environment Setup ▼ 20 sec continuously.
Battlefield Formation
■ Affects all allies.
Battlefield Formation: ATK ▲ 23.68% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 17.16%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 25.5% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 18.48%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 27.32% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 19.8%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 29.14% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 21.12%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 30.96% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 22.44%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 32.78% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 23.76%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 34.61% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 25.08%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 36.43% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 26.4%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 38.25% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 27.72%.
Effect 2 Target(s): All allies
■ Affects all allies.
Battlefield Formation: ATK ▲ 40.07% of the skill user's ATK for 10 sec.
■ Affects self while in Environment Setup status.
Enhanced Environment Setup
Function: Enhances Environment Setup.
Duration: 10 sec
Effect 1: Damage taken multiplier of Environment Setup is scaled by 100%.
Effect 1 Target(s): All enemies
Effect 2: Incoming healing ▲ 29.04%.
Effect 2 Target(s): All allies
Skill recommendations
Build
CUBES
Bastion if you have enough max ammo lines. Resilience otherwise since she is a slow girl to reload.
OL GEAR
A bunch of her buffs are final ATK, so you can build her as a DPS unit. ATK, Elemental DMG and max ammo capacity take priority. Anything else is just filler, no need for Hit Rate since she is a Machine Gun.
Pros & Cons
- When paired with Eunhwa: Tactical Upgrade, they are great supporters that can be used on any type of content even if her buffs are oriented towards True Damage and RL/SR
- Both of them are pretty cheap to build if you just want them to 'work', since you can go 4/7/7 and stop there until you get more resources
- Her sustain is the best in the game when it comes to duos (bunnies, JKs, etc.) since it has 100% uptime
- Without Eunhwa: Tactical Upgrade she will kill herself, since she has a screen wide taunt, you also lose part of her kit so not worth using unless both are together
Solo Raid Usage
This is based on the top 50 players of all NIKKE servers combined. Data is from enikk.app, check their website for a lot more information.
Usage shown is based on the date the unit was released to avoid empty spaces on previous raids.