41 Achievements in total:

• 1 currently (partially?) broken(still broken as of 10/15/2023)
  
• 2 for completing the campaign (1 related to Survivor Mode difficulty)
  
• 5 related to the story (3 of which are Scion Heists)
  
• 11 for recruiting all Agents and Allies
  
• 5 related to Ally-specific upgrades
  
• 8 for Mission Sortie Agent Pairings
  
• 5 related to specific non-critical mission types and modifiers (defeating x/y/z Scion)
  
• 4 miscellaneous achievements (combat and etc)

The Last Lamplighter
Meet Locke at the Hideout


Some of these recruitment missions are mutually exclusive during the week they become available. The mission(s) you didn't initially pick can be found again by running search expeditions.

As part of the story, you'll initially have to choose between recruiting 2 agents—Ana Sofía and Célestine (see relevant achievements below). You can recruit the other agent later. Who you recruit first is up to preference.

As part of the story, you'll initially have to choose between recruiting Mother Amina and Danys Belfort (see relevant achievements below). You can recruit the other ally later. Who you recruit first is up to preference and only affects the base upgrades you can access earlier.

Hidden Power
Learn the truth about the Houses of the Banished Court

Keystone Recovery missions do not have an achievement tied to them. Regardless, you still need all 4 to progress the story. Each subsequent Keystone Recovery mission seems to slightly increase in difficulty. The Usurpers that spawn near the end of these missions attack everything on sight and can be used to your advantage. This remains true even for the final mission.

Heists come in 3 parts:

1. Heist Setup
   
2. Prep Work (Optional) - Completing these makes the Heist easier.
   
3. The Heist

I don't recommend doing all Prep Work missions in the same run wherein you try to recruit all 10 Base Agents. Depending on RNG, you may run out of time before completing 1 or the other task.

The Persephonite
Complete the Marteau Heist, "The Other Side"



The Abyssal Nectar
Complete the Nicastro Heist, "The Cold Epiphany"



The Red Sulfur
Complete the Strum Heist, "Tomb of the Everlasting"

Light the Way
Complete the Campaign


The final mission pits you against all Scions (not at the same time). You don't need to fight all of them as I was able to sneak around the 2nd Scion and make my way to the "winner". I personally believe having Marteau as the winner is the best-case scenario because of his defensive style. Once you reach the final Scion, you'll lose one of your (4) deployed Agents so choose who you send away wisely. You can drop their items on the ground before sending them in for extra supplies. After losing the Agent, you'll need to play defensively for 6 turns until you can finally damage the Scion.


Sometime during those 6 turns, Usurpers will spawn on both sides of the battlefield. Leave them alone so they can distract your enemies.



Once the Scion is dead, all enemies except the Usurpers will be vulnerable to Finishers for a couple of rounds.



You can use this to your advantage alongside The Satyr card (+3 Speed to the entire party at Level 5) to get free movement across both sides of the map leading to the Escape zone. Using Finishers doesn't cost AP if the enemy is within 1 movement range.



Like Back in the War
Complete the Campaign on Survivor Mode

• Don't do unnecessary missions unless you really need it for purchasing/upgrades. This means you don't need to do Prep Work missions (if you can handle it) or recruit all Agents. Remember that you want to minimize the gain on the Doomsday Clock.
  
• It's up to you whether you recruit 4~6 Agents (4 deployable for critical missions and 1~2 for expeditions), but just remember that you can still get by without all the Allies and Agents. What's important is managing the Doomsday Clock and your Aether/Supplies for upgrades and shop purchases. Using resources wisely has a larger overall impact than earning a bit of extra resources from search expeditions.
  
• Save/reload a mission if you think a King's Aether can spawn in.
  
• Use Crossroad Beacon (Infernal Device) missions strategically to revert Breakpoints.
  
• Keep an eye out for The Satyr (+3 Speed to the entire party at Level 5) card. Run to the Escape zone instead of fighting whenever the option presents itself because Stress Breaks, Mortal Danger, and their post-mission consequences (Breaking Card and Wounded) are too heavy a burden to bear for your Survivor Mode run.

After recruiting your first agent and ally, you'll learn about expeditions. Expeditions unlock special missions that progress the story, earn resources (Supplies/Aether/Intel), and reveal recruitment missions for the rest of the available roster. Please note that Nocturne, though powerful, is an agent locked behind DLC. I was originally recording individual videos for all the recruitment missions until I realized during my 2nd run that the mission maps are not unique.

The Rebel Agent
Recruit Ana Sofía


The Spy in the Dark
Recruit Célestine


The Bodyguard
Recruit Fedir


The Bohemian
Recruit the Alexandrite


The Renegade
Recruit Jianyi


The Vigilante
Recruit Judith


The Sharpshooter
Recruit Purnima


Unlike Agents, Allies cannot be utilized on the field except during their recruitment mission. Instead, they provide passive upgrades at the cost of Aether/King's Aether.

The Healer
Recruit Mother Amina


The Weaponsmith
Recruit Danys Belfort


The Cartomancer
Recruit Madame Mei



The Best of the Worst
Recruit the base 10 Agents in a single campaign


This achievement has an element of RNG. If you find yourself not getting any recruitment mission search expeditions, try progressing the Keystone missions a bit. I personally didn't get my 7th and 8th Agents until completing 1 Keystone Recovery mission. I do not suggest completing all Prep Work Heist missions in the same run that you try to recruit all 10 Base Agents.

Self-Actualization
Completely unlock any Agent's Skill Tree


Self-explanatory. Also requires the Tempered Weapon unlock.

Hold Your Temper
Unlock a Tempered Weapon


Tempered Weapons are on the final tier of Agent Skill unlocks. Seric Steel is required to unlock these weapons and is usually a reward for completing all optional tiers of a Hijacking Mission (which can be somewhat difficult). They can also be spawned randomly during missions sometime during the mid-to-end game (around the same time Crossroad Beacons are unlocked). You can save and reload a mission to change the loot, but it's only worth doing so if the first couple of areas are easily lootable.

Madame Mei has upgrades that increase the level cap of the Undrawn Hand Cards. Get these ASAP. She also has upgrades that increase t he number of cards rewarded upon mission completion. I've gotten up to 5 cards during longer missions that have multiple Motes of Fate. Note that you can upgrade cards in 2 ways:

• Stacking Duplicates
  
• Spending Ink

Spending Ink is very expensive for Level 3 and 4 cards, but I highly recommend upgrading all (useful) cards up to Level 3 so you can reach Level 5 sooner via duplicates and earn A Full Hand.



Twist of Fate
Upgrade any Undrawn Hand Card to Level III


A Full Hand
Upgrade any Undrawn Hand Card to Level V


Full Pockets
Equip an Agent by filling all 6 Item Slots


Mother Amina and Danys Belfort each have 1 upgrade that increases your item slots to a total of 3 consumables. The 3 equipment slots are already initially available and can be filled as soon as you can purchase/obtain (via mission rewards) equipment.

To knock these out real quick, start a new game and toggle the "skip the intro" feature to pre-select your starting Agents. Complete any random mission to get a few of these achievements at a time. Rinse and repeat.



Wrecking Crew
Complete a Mission successfully with Ingrid and Fedir in your squad


Untouchables
Complete a Mission successfully with Lateef and Judith in your squad


Guns Blazing
Complete a Mission successfully with Eddie and Purnima in your squad


You Are What You Do
Complete a Mission successfully with Célestine and Ana Sofía in your squad


Overlapping Circles
Complete a Mission successfully with Célestine and Alexandrite in your squad


The Renegades
Complete a Mission successfully with Ana Sofía and Jianyi in your squad


Defiance
Complete a Mission successfully with Fedir and Judith in your squad


The Professionals
Complete a Mission successfully with Fedir and Purnima in your squad

Outside of the Keystone and Heist missions, there are also relatively important yet optional mission types related to achievements.

• Assassination/Public Enemy
  
• Crossroad Beacon/Infernal Device - I found these missions to be in short supply. Complete them sparingly because these missions have the added benefit of reverting a Scion's House progress back to the nearest breakpoint. This is especially potent against Lady Nicastro.

• Hijacking (no achievement: difficult, but rewarding) - Despite not having an achievement tied to these missions, it's still worth attempting one during your Explorer run because completing all rounds of a Hijacking mission usually rewards Seric Steel—a resource needed to fully upgrade your skill tree and earn the Hold Your Temper and Self-Actualization achievements.

The Fish Rots from the Head
Complete an Assassination.


Assassinations simply consist of eliminating a target (usually an Officer) and escaping. Note that although shock mines don't lure Assassination targets, you can still use them to instakill the target if it lands along their path (before it alerts them).


Last Stop
Destroy a Crossroads Beacon.


Crossroad Beacon (Infernal Device) missions usually consist of destroying a large device surrounded by ~6 generators. The generators typically have a shield that needs to be hit once to deactivate. Once all generators are destroyed, the device is automatically destroyed as well.



It's very important to position yourself close to the beacon before initiating combat because you only have a limited amount of rounds to destroy all generators. I recommend bringing in grenades or Agents that have the capacity to hit multiple targets (Fedir & Eddie).

On top of the mission types mentioned above, sometimes non-critical missions appear on the World Map with a Scion icon beside it. This means that specific mission is personally overseen by a Scion and will have a slight bump in difficulty. Defeating the Scion during these missions nets the achievements below. This modifier can appear alongside various non-critical mission types for an additional layer of challenge. My favorite method of dealing with Scions is to use The Waif + The Blacksmith in tandem to inflict major single-target damage in 1 turn.

You're Fired
Defeat Trace Marteau in a non-Critical Mission


Trace Marteau likes to teleport around the map. Additionally, he likes to place down Arc Turrets that shoot out electricity to inflict Shock and reduce Speed (movement) when you move within their range. He also summons white spheres that discharge electricity if you let them detonate during their turn. Destroy them swiftly to avoid this. For additional context, Marteau is probably the least lethal of the 3 Scions especially if you can keep suppressing his turrets and spheres.


The King is Displeased
Defeat Lady Nicastro in a non-Critical Mission


Lady Nicastro has high Speed (movement) and can throw a Poison Dagger. She sometimes lays down a smokescreen that makes her unavailable to target for a turn. Lastly, I find her to be the most lethal Scion because she employs Counterattacks and Melee Overwatch.


The Conqueror Conquered
Defeat Lord Strum in a non-Critical Mission

Burning Brightly
Deal a total of 10000 damage across all Agents


Wrestling with Demons
Remove a Breaking Card by taking the affected Agent on a Mission


Breaking Cards can happen when you experience a Stress Break during a mission. They are revealed at the same time you draw cards from the Undrawn Hand. Simply deploy an Agent successfully in a mission for the Wrestling with Demons achievement. I'm not sure if you get a new Breaking Card if you enter Stress Break again during the same mission you are trying to remove the initial Breaking Card.



Stay With Me, Buddy
Stabilize an Agent in Mortal Danger


An Agent enters Mortal Danger when their HP reaches 0 and they go down. Stabilizing them requires 1 AP. Successively entering Mortal Danger has greater adverse consequences.

Monster Slayers
Defeat a total of 100 monsters

The achievement below is currently broken and has been verified to be so by several other users. There may be other reasons why it's not unlocking for a few of us, but so far nobody has provided useful information on triggering the achievement in the comments. The community manager is aware of the problem but I haven't seen any indication of when it will be fixed. Lady Nicastro always retreats after a few rounds. Even if you do manage to deal enough damage to eliminate her in 1 round, the achievement still does not trigger.

https://www.reddit.com/r/LamplightersLeague/comments/16yxx06/you_cannot_kill_lady_nicastro_the_first_time_you/

Tables Turned
Defeat Lady Nicastro in the Tutorial mission "A Hasty Escape"

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