Hidden Wings

Eagle Eye - 01: "Training Course"

Enemies

Meticulous Planning Edmond (14,616 HP)
Strict Guard Quincy (14,616 HP)

Team Recommendations

At least 4 units that can attack

Stage Tips

When Edmond wants to use Lead the Way, all party allies must guard so that they can subsequently seal Edmond and Quincy's actions, otherwise the battle will be lost.
When Edmond uses Protective Ambush and Quincy uses Vigilant Observation, you must first use a strong attack on Edmond to go around his defense before you can attack Quincy to dispel his accumulated power. When Quincy is attacked while charging power, he will counter-attack all party allies. Heal at appropriate times. When your whereabouts have been revealed and Edmond prepares Rapid Escape, you must break his shield with Trigger Skill damage. Only when the change in HP of both instructors is >1% can you resume the pursuit, otherwise the battle will be lost.
Pay attention! At this time, you can only use normal attacks on Quincy, otherwise he will enter a dark alley and you will not be able to damage him.

On turn 2: Guard all.

ㅤ** Repeat this every 8 turns (10/18/etc).

End of turn 2: Edmond will use an AoE on the party which will paralyze both him and Quincy if you guarded.
End of turn 3: Edmond and Quincy will heal themselves slightly.

ㅤ** This repeats every 3 turns (6/9/etc).

On turn 5: Hit Edmond with an ultimate, then attack Quincy 3 times. Quincy will counter these attacks, so watch your health.

ㅤ** Repeat this every 8 turns (13/21/etc).

On turn 8: Break both shields with basic attacks only if possible. Be careful to not use any ultimates on Quincy in particular.

ㅤ** Repeat this every 8 turns (16/24/etc).

The battle will end when both are at 1% HP.

Eagle Eye - 02: "Secret Operation"

Enemies

Impermissible Lapse Rudy (79,959 HP)
Cautious Action Susan (76,436 HP)
Careful Execution Grimm (59,575 HP)
Smooth Negotiation Pepper (59,630 HP)

Team Recommendations

A guardian that can taunt every 3 turns at least in slot 2 or 4
Damage reduction units are also useful if you are having trouble

Stage Tips

When Grimm uses Corresponding Signal, the party allies in positions 2/4 must guard so that Pepper can use Seek Clues.
When Rudy uses Special Service, the party allies in positions 1/3/5 must use strong attacks to finish the drinks in one go to prevent allies from being knocked out subsequently. Rudy will also use Enter and Serve on all party allies. A <Guardian> must use Taunt to drink the liquor in place of the other party allies.
When Grimm tries to use Tipsy Trap, a <Guardian> must use a strong attack to prevent <Healers> from being locked on.

Rudy and Susan (Water and Wood) leave together at 1%.
Grimm and Pepper (Fire and Light) leave together at 1%.
- If you kill a pair, you can avoid worrying about their attack sets!

On turn 2: Guard slots 2 and 4. DO NOT ATTACK with them even if one is a guardian.
End of turn 2: Pepper will use an ultimate on slots 2 and 4, making them take 200% more damage for a turn.
On turn 5: Use an ultimate with slots 1, 3, and 5.
End of turn 5: Susan will use an ultimate on slots 1, 3, and 5.
On turn 6: DO NOT GUARD ANYONE. Taunt with your guardian here if possible.
End of turn 6: Susan will attack the taunted guardian.
On turn 9: Taunt with your guardian here again to avoid letting your healer take full damage.
End of turn 9: Pepper will use a strong attack on the taunted unit this turn.

The above all loops every 9 turns, starting over at 11/20/etc.

Eagle Eye - 03: "Finding Figures"

Enemies

Elusive Enigma Duke Bailey (431,768 HP)

Team Recommendations

Support units should NOT have attacking skills
At least 2 strikers or saboteurs
Basic attacks are extremely useful here

Stage Tips

When Duke Bailey uses Remain Silent, 1 <Striker> or <Saboteur> must guard to draw the attention of the Knights to avoid the originally locked-on party ally from receiving heavy damage and losing the battle.
When Duke Bailey uses Ingenious Protection, all party allies must guard to serve Exquisite Dessert. When Duke Bailey's HP reaches 30%, you can guard to raise your own Basic Attack damage, but make sure to reduce Duke Bailey's HP to 10% before the Knights' alert reaches 6 stacks, or all will be for nothing.
When Duke Bailey's HP reaches 10%, you must reduce his HP to 1% within 1 turn. It is recommended to prioritize using normal attacks. Only use strong attacks as the last action.

There are HP thresholds at 30% and 10%. Be careful of them and be prepared to rush at these points.
You will be constantly hit by bleed and your recovery will be lowered, so you want to hurry if possible. If that weren't enough, your attackers' cooldowns will constantly be increased by 1.

On turn 3: A unit will be taunted this turn. Guard a different striker or saboteur to avoid heavy damage on the taunted unit.

ㅤ** Repeat this every 6 turns (9/15/21/etc).

End of turn 3: The guarded/newly taunted unit will be hit with a strong attack.
On turn 6: Guard all to remove the shield.

ㅤ** Repeat this every 6 turns (12/18/24/etc).

End of turn 6: The party will be hit by a strong AoE attack.

At 30% HP: You must get him to 10% in about 6 turns here, so hurry.

ㅤ** Your attack power will be lowered, but you can guard to raise your basic attack damage. ㅤ** Ultimates will make him counter for 20% of his max HP to your whole party, and he will take less damage from it.

At 10% HP: You must finish him off in this turn, so make sure your skills are ready prior to this.

ㅤ** Ultimates will do less damage after the first, so plan to use only one, or use something like basic attacks, trigger, or turn by turn damage to kill him.