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As an Esoteric Flurry Striker, you're mainly interested in Crit, Swiftness, and Specialization. The exact ratio of these stats will, however, depend on your current gear.

• At the start (Tiers 1 and 2), you should prioritize Crit and Specialization should be your secondary stat. Swiftness is not as important here, but you can take some to boost your Movement and Attack speeds and reduce your Cooldowns a bit. 
• In the Late Game (Tier 3), Swiftness overtakes Crit when it comes to value. Because of this, it should be your primary stat (especially if you already have Legendary accessories). 800 Swiftness is a bare minimum, but some players prefer to go for 900 or more. The rest of your stats should be split equally between Crit and Specialization. 

Esoteric Skill

Striker gathers Fire Energy and advances 4 meters forward, dealing large amounts of Damage and performing an upward attack that deals three extra hits. 

This is one of your main Damage sources that gets boosted by the Esoteric Flurry Engraving. Its main downsides are the relatively long Cooldown (we shorten it via the Quick Prep Tripod) and the Back Attack modifier (most of Striker's Attacks have this). It also deals High Stagger Damage, which is nice. 

• Stagger: High 
• Attack Type: Back Attack 
• Super Armor: Paralysis Immunity 

Level 12

1. [Level I]  Quick Preparation - Reduces the skill's Cooldown by up to -8 seconds (at Rank 5). This ensures that Tiger Emerges is always ready when you need it. 
2. [Level II]  Single Hit  - Increases Damage the skill deals when you attack a single enemy with it (so, a boss for example). At Level 5 this provides a 70% Damage Inflicted increase, which is insane. 
3. [Level III]  Ascension - A giant tiger head shoots up and attacks on the last hit, inflicting an additional 131% (at Rank 5) of Base Damage in a 100% wider area. This does two things: it increases the skill's AoE which helps against trash, and it increases the skill's total damage. 
4. [RUNE] Overwhelm - A rune that makes the Skill deal up to +30% Stagger Damage. This will help you help your team with stagger checks. 

Esoteric Skill

Striker creates a tornado that attacks enemies thirteen times over 3 seconds, pulling them close and dealing high amounts of total damage. Striker can move up to 12 meters while using this skill. 

This is your 4th spender Skill (and the least important one), and you will want to pick it up only if you are able to generate enough resources to support it (high Specialization and Wealth Runes help with this). 

• Stagger: High 
• Attack Type: Back Attack 
• Super Armor: Paralysis Immunity 

Note: Replace this one with a builder skill (like a Sweeping Kick), if you can't generate enough Identity Meter to support it. If you run the recommended Wealth Runes, you should be ok, though. 

Level 12

1. [Level I]  Lightning Storm - Changes the skill's Element to Lightning. It now creates a Lightning Storm that has a 20% chance on each hit to deal additional Damage equal to 160% (at Rank 5) of the skill's Base Damage. Considering the total number of hits, this is almost certain bonus damage. 
2. [Level II]  Growth Attack - With this Engraving, each Tornado hit increases the skill's Damage by +12% (at Rank 5), up to a total of +108%. 
3. [Level III]  Summon Storm - Changes to Normal mode and removes back attack effect. Slowly calls forth tornado winds from every direction that chases foes for 3seconds. Damage to foes +40% (at Rank 1). On a hit, Push is removed and inflicts Paralysis. This makes the skill more dynamic and easier to use to its full potential. 
4. [RUNE] Overwhelm - A rune that makes the Skill deal up to +30% Stagger Damage. This will help you help your team with stagger checks. 

Esoteric Skill

Striker strikes the ground to cause three explosions. The explosions advance forward in consecutive order to inflict increasing amounts of damage. Struck enemies are knocked back. 

This is a very powerful spender skill that amounts to a solid portion of your total burst damage, especially with the chosen Tripods. 

• Stagger: Mid 
• Attack Type: Back Attack 
• Super Armor: Paralysis Immunity 

Level 12

1. [Level I] Weak Point Detection - Increases the damage dealt to push-immune enemies by up to +60% (at Rank 5). Bosses tend to be push-immune, so this will increase your DPS during Raid encounters. 
2. [Level II] Flame Explosion - Changes the skill's Element to Fire and adds a Damage over Time component to it. Damaged enemies will now be engulfed in flames and receive Fire Damage every second for 5 seconds. This effect stacks up to 6 times, which can potentially make its damage devastating. 
3. [Level III] Great Explosion -  After the third explosion, another great explosion will occur to inflict Damage equal to 120% of Base Damage (at Rank 5). Additional AoE and Flame Explosion synergy. 
4. [RUNE] Galewind - Increase the skill's casting speed. With this, the Skill's animation becomes much faster. 

Esoteric Skill

Striker gathers Lightning Energy that penetrates enemies. Then, he kicks and knocks enemies into the air, inflicting large amounts of damage. 

This powerful Esoteric Skill deals devastating single-target damage and can be used to exploit enemies' weak points. Moreover, it's amazing at dealing Stagger Damage. Just remember to fully charge it. 

• Weak Point: Level 2
• Stagger: High 
• Attack Type: Back Attack 
• Super Armor: Paralysis Immunity 

Level 12

1. [Level I]  Single Hit - When attacking a single enemy with the skill, the skill's Damage is increased by up to +40% (at Rank 5). This is great for Boss encounters. 
2. [Level II]  Weak Point Detection - Increases the damage dealt to push-immune enemies by up to +70% (at Rank 5). Bosses tend to be push-immune, so this will increase your DPS during Raid encounters. 
3. [Level III]  Charged Kick - Charges for 1 second to attack the foe. When Overcharging, draw upon the great power of the White Tiger to inflict +120% Damage (at Rank 5). Move Distance +3 meters. If charging fails, Damage -75% and Move Distance -1 meter. Will still paralyze the enemy. 
4. [RUNE] Galewind - Increase the skill's casting speed. With this, the Skill's animation becomes much faster. 

Striker charges forward while kicking, inflicting two damaging hits. Then, the skill can be pressed 3 times to deliver 4 additional kicks at a very fast speed to deal additional damage and perform a spinning kick followed by a finishing blow that knocks enemies back. 

This is an amazing Elemental Meter generator, especially when you pair it with a Wealth Rune. Moreover, it doubles as a mobility skill when needed. 

• Stagger: Mid 
• Attack Type: Back Attack 
• Super Armor: Paralysis Immunity 

Level 11

1. [Level I]  White Flame Kick - Changes the skill's Element to Fire. The skill now also burns enemies when the rapid kick attack lands 4 times, dealing additional fire damage every second for 5 seconds. 
2. [Level II]  Excellent Mobility - First charge attack's move distance is increased by 3 meters and the skill's Cooldown is reduced by up to -7 seconds (at Rank 5). 
3. [Level III]  Full Moon Kick - Changes the Skill to Normal mode. You now Charge forward and spin to land a finishing blow that inflicts +341% Damage (at Rank 5). This makes the skill much more dynamic and concentrates its damage in one big hit. 
4. [RUNE] Wealth - With this Rune, your Elemental Meter gained from using the ability will be increased by another 40% (with Legendary Rune). This is a nice buff to your Esoteric Skills. 

Striker performs a roundhouse kick, dealing moderate amounts of damage. If the skill is used again, Striker kicks upward, sending targets flying and inflicting another damaging hit. Direction can be changed during the additional attacks. 

This skill offers a nice Attack and Move speed buff for 3 seconds when used, which makes it a great asset to have. Moreover, it works extremely well as a Counter Attack and generates a lot of Esoteric Meter. 

• Attack Type: Back Attack, Frontal Attack 
• Counter: Yes 

Level 10

1. [Level I]  Excellent Mobility - Increases the move distance of the first kick move by 1 meter. 
2. [Level II]  Blessing of the Wind  - On the skill's second hit, your Move Speed and Attack Speed are increased by +19,2% (at Rank 5) for 3 seconds. 
3. [Level III]  Abundant Resources - Increases the skill's MP cost by 25% and the Esoteric Meter generated by it by up to +300% (at Rank 5). 
4. [RUNE] Wealth - With this Rune, your Elemental Meter gained from using the ability will be increased by another 30% (with Epic Rune). This is a nice buff to your Esoteric Skills. 

Striker rolls forward and summons lightning, inflicting moderate amounts of damage. Enemies hit with this skill have their Crit Resistance reduced by up to -8% for 6 seconds. 

This is a powerful synergy skill that will make up for your lacking Crit (which results from the necessity to stack Swiftness at later stages of the game) and buff the DPS of everyone in your party. Moreover, it generates a lot of Elemental Meter. 

• Weak Point: Level 1 
• Attack Type: Back Attack 

Level 10

1. [Level I]  Lightning's Blessing - With this, Lightning Whisper will also increase the whole party's Attack Speed by 8% for its duration. 
2. [Level II]  Quick Preparation - Reduces the skill's Cooldown by up to -8 seconds (at Rank 5). This increases the uptime of Lightning Whisper's buffs and debuffs. 
3. [Level III]  Fatal Lightning - With this, Lightning Whisper reduces enemies' Crit Resistance by a further 10% (for a total of -18% Crit Resistance). 
4. [RUNE] Wealth - With this Rune, your Elemental Meter gained from using the ability will be increased by another 30% (with Epic Rune). This is a nice buff to your Esoteric Skills. 

Striker delivers a roundhouse kick, dealing moderate amounts of damage to the enemy 2 times, then he attacks an airborne enemy to launch them into the air. If the skill is used again within 2 seconds, Striker performs a knee attack that inflicts another damaging hit. If the enemy is airborne of lying on the ground, this will also launch them into the air. If the skill is used again, within 2 seconds, Striker becomes immune to Paralysis and rolls forward to perform a downward strike that inflicts moderate amounts of damage. Airborne enemies are slammed into the ground when the last hit lands. Each time you use additional Skills, the Cooldown of this skill is increased by +2 seconds. 

This Skill can be used up to 3 times in a row, which makes it perfect for pricing Rune effects. Combining it with Rage Rune generally produces the best results. 

• Attack Type: Back Attack 

Level 7

1. [Level I]  Excellent Mobility - Move Distance with the first kick is now increased by up to +4 meters (at Rank 5). 
2. [Level II]  Enhanced Strike - Increases the skill's outgoing Damage by up to +60% (at Rank 5). 
3. [RUNE] Rage - Gives you a chance to gain an Attack Speed/Move Speed buff for 6 seconds when Storm Dragon Awakening is used. This Rune will help you increase the speed of your rotation. 

Striker advances 4 meters forward and strikes 4 times with explosive attacks that inflict very high amounts of damage each. If the first strike fails, subsequent ones will be canceled. 

This is a powerful ultimate skill with a very long Cooldown, use it with caution and communicate its usage with the team to avoid misunderstandings. 

• Stagger: High 
• Super Armor: Push Immunity, Debuff Immunity 

Esoteric Flurry Striker utilizes a builder-spender rotation that revolves around generating Esoteric Meter with builder skills (Lightning Whisper, Moon Flash Kick, Sky Shattering Blow) to spend it on Esoteric Skills (Tiger Emerges, Call the Wind God, Blast Formation, and Lightning Tiger Strike). 

• Lightning Whisper should always be used directly before Lightning Tiger Strike and Tiger Emerges as these two skills benefit from it the most. 

Your End-Game Rotation (with Wealth Runes and high Specialization) looks like this: 

1. Use Storm Dragon Awakening three times for a good chance to proc Rage Rune 
2. Use Sky Shattering Blow 
3. Use Lightning Whisper to apply the Crit debuffs 
4. Use Lightning Tiger Strike 
5. Use Tiger Emerges 
6. Use Moon Flash Kick 
7. Use Sky Shattering Blow 
8. Use Blast Formation 
9. Use Call the Wind God 

If you can't generate enough resources to follow the above-mentioned rotation, use the following one instead (be aware that Call the Wind God is replaced with Sweeping Kick for extra resource generation): 

1. Use Storm Dragon Awakening three times for a good chance to proc Rage Rune 
2. Use Sky Shattering Blow 
3. Use Moon Flash Kick 
4. Use Lightning Whisper 
5. Use Sweeping Kick 
6. Use Lightning Tiger Strike 
7. Use Tiger Emerges 
8. Use Sky Shattering Blow 
9. Use Blast Formation 
10. Continue by using builder skills on Cooldown and follow them up with Lightning Whisper ⇒ Lightning Tiger Strike ⇒ Tiger Emerges. If you have spare Orbs, use Blast Formation 

1. Esoteric Flurry (Class Engraving) - Esoteric Skill Damage (at Level 1: +8%, at Level 2: +13%, at Level 3: +18%), but only 1 Elemental Orb is consumed. 

This is the core Engraving of this build. It changes the Orb cost of all your Esoteric Skills to 1 and increases the damage you deal with them. 

2. Master of Ambush  - Increases the damage you deal with Back Attacks (Level 1 - +5%, Level 2 - +12%, Level 3 - + 25%). You should get this at Level 3 (which could amount to 25% increased DPS if you're perfect at performing back attacks). 

As a Striker, you want to hit your enemies in the back anyway, so this Engraving is a natural fit. It will increase your overall DPS by quite a lot and further encourage you to perform Back Attacks whenever possible. 

3. Grudge - Increases your Damage Dealt to Bosses (Level 1: +4%, Level 2: +10%, Level 3: +20%), but makes you take 20% more damage from them. 

Grudge is one of the most powerful offensive Engravings, but it comes with a severe drawback that may get you killed. If you can live with the downside, it will serve you as an unconditional damage increase. Pick it up if you feel like you can avoid most (or all) avoidable damage during boss encounters. If you're still learning mechanics, you'll be better off skipping it. Also, remember that it's only worth using at Level 3, so never use it at level 2 and especially 1 (unless you want to take 5% more damage for every 1% increase in your own DPS). 

4. Cursed Doll - Increases Attack Power at the cost of reduced 25% Healing Received (does not affect natural Health recovery (Level 1 - +3% Attack Power, Level 2 - 8% Attack Power, Level 3 - +16% Attack Power).

This Engraving can boost your offensive power rather significantly, but the tradeoff is painful. Only pick it if you know encounter mechanics very well, as its downside will hurt too much otherwise; In other words: if you lack experience, skip it. Also, using this at Levels 1 and 2 is not worth the risks involved (so, use it at Level 3 or don't use it at all). 

5. Adrenaline - When using skills other than mobile and basic attacks, attack power increases by (Lv. 1: 0.3%, Lv. 2: 0.6%, Lv. 3: 1%) for 6 seconds (stacks up to 6), and when this effect reaches its maximum stack, critical hit rate increases by an additional (Lv. 1: 5%, Lv. 2: 10%, Lv. 3: 15%). This effect is applied after the skill ends if the cooldown time reduction due to skill cancellation is applied. 

Thanks to the sheer number of skills you rotate through with this build, Adrenaline is a solid choice - you should be able to stack it up with ease. 

6. Keen Blunt Weapon - Increases your Crit Damage (Level 1: +10%, Level 2: +25%, Level 3: +50%) but also gives your attacks a chance to deal 20% Reduced Damage. 

The more Crit Rate you have, the more powerful this Engraving becomes. However, as a Striker, you receive a Crit bonus from Lightning Whisper which makes Keen Blunt Weapon viable even when you don't have too much base Crit. 

7. Spirit Absorption - Increases Attack Speed and Movement Speed by (Level 1 - 3%, Level 2 - 8%, Level 3 - 15%). 

This one is completely optional. Pick it up if you feel like you need some extra Attack and Movement Speed. 

• Gear Sets - As a DPS Class, Soulfist wants his set to boost his offensive capabilities as much as possible. Here are the optimal Sets for each Tier: 
  • Tier 1: Seraphic Oath Set (Epic); Boisterous Elemental Set (Legendary) 
  • Tier 2: Marvelous Earth Set (Epic); Unyielding Will Set (Legendary) 
  • Tier 3: Twisted Dimensional Set (Epic); Preordained Diligence Set (Legendary) 

• Gems -  With these, you can apply a Cooldown Reduction or Bonus Damage to your Skills. There is a limit of 11 Gems; you should distribute them in the following way: 
  • You should use Cooldown Reduction Gems on the following Skills: Lightning Whisper, Esoteric Skill: Call the Wind God, Sky Shattering Blow, Moon Flash Kick, Esoteric Skill: Blast Formation, Esoteric Skill: Tiger Emerges, Esoteric Skill: Lightning Tiger Strike 
  • You should use Attack Gems on the following Skills: Esoteric Skill: Lightning Tiger Strike, Esoteric Skill: Tiger Emerges, Esoteric Skill: Blast Formation, Esoteric Skill: Call the Wind God 

• Cards - Depending on your budget, you should go for one of the following Card Sets: 
  • Light of Salvation Set - A Full set offers +30% Dark Damage Reduction, changes your Damage type to Holy, and increases your Holy Damage dealt by 15%. This is the optimal Set for the build. 
  • Three Umar Families Set - A Full set offers +12% Back Attack Damage to Enemies, -7.5% Damage from Guardians during Guardian Raids, 5% Elemental Damage Reduction, +2% Elemental Damage Done, A chance to Increase All Elemental Damage by 24% for 8 seconds. 
  • Lostwind Cliff Set - A Full set offers +25% Dark Damage Reduction and +7% Critical Rate. This one is the cheapest of the recommended three. 

ENDNOTE

This is the initial version of our Esoteric Flurry Striker Raiding Build for Lost Ark, where we tried to include all of the important information on how to set up this character while keeping the guide as compact as possible. If we've missed something of importance, please let us know! 

If you have any Build requests, please post them in the Comments section below. We will be happy to cover your most requested builds in the future! Also, we hope that you have found this guide useful and informative. Also, we will be happy to receive constructive criticism that will help us improve our future work, so don't hesitate to give us your feedback.