Lost Castle 2 Achievements Guide

Lost Castle 2 Achievements Guide

A practical Lost Castle 2 achievements guide for v1.0, covering hidden achievements, Nightmare 1-5, Memory Shards, Mage Tower, weapon clears, co-op, Soulstones, Soul Seals, companions, and cleanup routes.

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Lost Castle 2 Achievements Guide

Quick Answer

Lost Castle 2 v1.0 has 85 achievements, but the fastest route is not to chase all 85 at once. Let early progression happen naturally, then clean up by route: weapon clears, Party Adventure, Nightmare 1-5, Seek the Truth, Memory Shards, Mage Tower, Soulstones, Soul Seals, companions, and rare collection goals.

v1.0 Achievement Strategy

Lost Castle 2 achievements are easier when you treat them as routes instead of one giant checklist.

A full list helps you check what is missing. A route plan tells you what to do next.

Lost Castle 2 achievement list showing Seek the Truth for collecting all memory fragments
Seek the Truth sits at 13.0% and requires all memory fragments, so Memory Shards should be tracked as a hidden route instead of casual pickups.
Achievement routeKey examplesBest timing
Natural progressionAdventure Begins, Junior collectors, early bossesFirst runs
Weapon clearsArchmage, Ranger Hunter, Musketeer, BlademasterAfter weapon filtering improves
Co-opParty AdventureQuick separate cleanup
NightmareNovice, Upcoming Talent, Supreme Being, Transcendent SaintAfter stable builds
Memory ShardsSeek the TruthDuring hidden route planning
Mage TowerOpen the Gate, Unknown Realm, Sweet Dreams, MastermindLate-game
Soul systemsGrant Me Power, War Soul Recast, Weapon Master, Peak Warrior, Soul BurstAfter Nia systems open
CollectionTop Weapon Collector, Super Treasure Collector, Castle BiologistLong-term cleanup
CompanionsCold Mage, Forest Ranger, Riverboat SwordsmanLate cleanup
Rare hidden goalsDragon Bones Unite, Consumerism, Plagued BodyFinal cleanup

Best Route Order for Achievements

This is the clean route for most players.

OrderFocusWhy
1Early camp and normal boss progressionUnlocks systems naturally
2Weapon clear achievementsEasier once weapon choices are more controlled
3Camp and collection milestonesBuilds long-term account progress
4Ethereal Nightmare 1-3Opens deeper systems and shard routes
5Memory Shards / Seek the TruthRequired for hidden progression
6Mage Tower unlock and bossesMajor hidden achievement route
7Nightmare 4-5Needs stronger builds and late systems
8Soulstone and Soul Seal achievementsBest after Nia systems are available
9Companion clearsEasier after route knowledge improves
10Rare collection and special hidden achievementsFinal cleanup

Decision Tree: What Should You Do Next?

Use this table when you are not sure which route fits your current save.

Your current signalYour stageNext achievement routeAvoid for now
You just reached camp or started normal runsNew playerAdventure Begins, Junior collectors, early boss achievementsMemory Shards, Mage Tower, rare cleanup
You can clear normal routes but have not focused weaponsStable normal progressionWeapon clears, camp upgrades, 100-200 collection milestonesNightmare 4-5
You have weapon filtering or preferred weapon controlWeapon cleanup readyStaff, Bow, Dual-Blades, Two-handed, Musket, Phantom Lantern, Turbo Lance, Katana clearsRandom weapon swapping
You have seen Ethereal Nightmare unlockNightmare unlockedCastle Bus, Novice, Upcoming Talent, Unrivaled MasterSoul Seal full resonance
Nia is in camp and Nightmare effects are availableNia systems readySoulstone smelting, Soulstone fusion, Soul Seal planningCompanion cleanup without a stable build
Memory Shards have started appearingHidden route startedSeek the Truth, Open the GateRandom collection farming
Mage Tower is availableHidden area routeUnknown Realm, Sweet Dreams, Mastermind, United Blades Against ChaosWeak weapon clear attempts
Nightmare 3 feels stableEndgame difficulty prepSupreme Being, Transcendent SaintCo-op setup distractions
Most progression routes are doneFinal cleanupCompanions, Castle Biologist, Dragon Bones Unite, Consumerism, Peak WarriorStarting new untracked routes

Early Achievements You Can Let Happen Naturally

These achievements have high unlock rates because they happen during normal early progression. Do not plan your route around them too much.

AchievementUnlock conditionRateRoute
Adventure BeginsEnter the camp for the first time98.4%Natural
Junior Treasure CollectorRecord 20 different treasures91.4%Collection
Junior Weapon CollectorRecord 20 different weapons90.0%Collection
Intermediate Treasure CollectorRecord 50 different treasures86.4%Collection
Intermediate Weapon CollectorRecord 50 different weapons83.1%Collection
Courtyard CleansingDefeat the Mad Gardener in the Black Forest82.8%Boss
Brother, Hold OnDefeat the Goblin Champion in the Black Forest81.9%Hidden boss
Wrath of the Black ForestDefeat the Forest Guardian in the Black Forest81.8%Hidden boss
Death Duel on the BridgeDefeat the Wandering Knight at the Castle Bridge81.3%Hidden boss
Demon ShadowDefeat Steward the Demon Sealer in the Black Castle79.3%Boss
Amnesiac GirlNia arrives at the Treasure Hunter’s camp78.1%Nia route

Weapon Clear Achievements

Each weapon achievement asks you to complete a successful adventure using a specific weapon type. Do these after you understand the weapon and can support it with runes, treasures, upgrades, and alchemy.

Lost Castle 2 weapon unlock choice with weapon types
Weapon clear achievements become easier once you can narrow your weapon pool; Blademaster is much rarer than the older weapon clears at 4.4%.
AchievementWeapon typeRatePractical route
ArchmageStaff49.5%Use a skill-focused setup: MP recovery, weapon skill uptime, blue-rune support, and safe spacing
Ranger HunterBow46.5%Use ranged pressure: multishot, projectile support, attack speed, and room-clear safety
Agile SlayerDual-Blades46.4%Use fast melee: attack speed, crit, hit triggers, and enough defense to survive close range
Heavy Sword WarriorTwo-handed Weapons40.0%Use heavy direct damage: burst windows, defense, and patient boss timing
Shadow MasterPhantom Lantern37.0%Use summon-style pressure: safer repositioning, summon support, and survival tools
Shield HeroSingle-handed weapon35.9%Use steady defense: safer blocks, counter windows, recovery, and consistent damage
MusketeerMusket33.5%Use ranged burst: spacing, projectile damage, crit, and emergency alchemy
Steam DemolitionistTurbo Lance25.1%Use commitment timing: learn charge windows before pushing the clear
BlademasterKatana4.4%Use fast melee support: attack speed, clean dodges, crit value, and safer boss windows

For weapon templates, use the Lost Castle 2 Builds Guide.

Co-op Achievement

The co-op route is simple. Do not overcomplicate it.

AchievementUnlock conditionRateRoute
Party AdventureStart an adventure in online multiplayer mode73.1%Co-op setup
Lost Castle 2 multiplayer room code screen
Party Adventure only needs an online multiplayer adventure start, so clear it separately before serious Nightmare or boss routes.

Nightmare Difficulty Achievements

Nightmare achievements are major v1.0 goals because they connect to deeper builds, Nia, Memory Shards, Mage Tower, Soulstones, and final cleanup.

Lost Castle 2 Ethereal Nightmare difficulty unlocked
Nightmare 4 and 5 have low unlock rates at 3.4% and 2.6%, so treat them as endgame build goals rather than normal progression.
AchievementUnlock conditionRateRoute note
Castle BusComplete a successful adventure on Normal difficulty11.4%First difficulty clear after normal progression
NoviceComplete a successful adventure on Nightmare difficulty 19.1%First Nightmare clear
Upcoming TalentComplete a successful adventure on Nightmare difficulty 28.1%Needs stronger build stability
Unrivaled MasterComplete a successful adventure on Nightmare difficulty 37.6%Start tracking late-game routes seriously
Supreme BeingComplete a successful adventure on Nightmare difficulty 43.4%Deep Nightmare route
Transcendent SaintComplete a successful adventure on Nightmare difficulty 52.6%Endgame difficulty route
Before pushing Nightmare 4-5, check…Why it matters
Weapon is filtered and familiarHard clears punish unfamiliar weapon timing
Runes support one planScattered bonuses lose value fast
Treasures connect to the weaponRarity alone will not carry deeper clears
Inscriptions and Soul Seals are progressingLater systems matter more in endgame routes
Alchemy is plannedDeep runs need saved answers
Boss damage is realLong fights create too many failure points

For details, use the Ethereal Nightmare Guide.

Memory Shards and Hidden Achievements

Seek the Truth is not just another hidden achievement. It points to the Memory Shards route, which then connects to Nia, hidden progression, Mage Tower, and late-game bosses.

AchievementUnlock conditionRateRoute
Grant Me PowerIf you want it, come and get it yourself. You’ve known the rule for a long time.13.0%Inscription / hidden route
Seek the TruthCollect all memory fragments13.0%Memory Shards
Open the GateSuccessfully open the gate of the Black Castle4.8%Mage Tower unlock route
Unknown RealmFirst enter the hidden area of the Mage Tower4.0%Hidden area
Sweet DreamsDefeat the Source of the Nightmare in the Mage Tower4.7%Mage Tower boss
MastermindDefeat Lord Alfred in the Mage Tower4.5%Mage Tower boss
United Blades Against ChaosDefeat The Deceitful Chaos God in the Mage Tower2.5%Final Mage Tower route

Grant Me Power is another hidden achievement in this same low-unlock group. The game only gives a cryptic hint: “If you want it, come and get it yourself. You’ve known the rule for a long time.” Treat it as an Inscription-related hidden route rather than a normal boss or collection achievement. If it has not unlocked yet, keep progressing through Nightmare, Nia, Inscription, and hidden-route systems instead of trying to farm it like a simple pickup.

For shard tracking, use the Hidden Mage Tower and Memory Shards Guide.

Boss and Area Achievements

Boss achievements are common, but the later ones need route planning and stronger builds.

AchievementUnlock conditionRateRoute
Dreadful MutationDefeat the Mutated Priest in the Ruined Cemetery74.5%Boss
DuelDefeat the Last Guardian in the Ruined Cemetery72.6%Hidden boss
Calming the RageDefeat the Angry Thunder Spirit in the Crystal Mountain72.0%Boss
Behold My Iron MusclesDefeat the Behemoth in the Crystal Mountain71.9%Hidden boss
Dragon’s LairDefeat the Crystal Devourer in the Crystal Mountain71.2%Hidden boss
Twin Fiends of the Ruined VillageDefeat “Alchemist” Eugene and “Mad Dog” Bobby70.8%Boss
Ice MaidenFirst enter the Frozen Cave8.0%Area
Misty SwampFirst enter the Mudfish Swamp7.9%Area
Flames and SandFirst enter the Saltpeter Desert6.9%Area
Caged BeastFirst enter the Castle Dungeon6.3%Area
Party’s OverDefeat the Frenzy Fishiod Shaman in the Mudfish Swamp7.6%Boss
Toy UprisingDefeat the Nightmare Maid at the Castle Bridge7.5%Boss
Friendly Neighborhood SpiderDefeat the Giant Hunterspider Queen in the Mudfish Swamp7.5%Boss
Bushido DuelDefeat the Phantom of the Lost Swordsman in the Frozen Cave7.3%Boss
Vigil EndsDefeat the Frost Colossus in the Frozen Cave7.3%Boss
Diet ControlDefeat the Treasure Anglerfish in the Saltpeter Desert6.4%Boss
Boat on Dry LandDefeat the “Captain” in the Saltpeter Desert6.3%Boss
Dungeon PhantomDefeat A Mysterious Shadow in the Castle Dungeon6.1%Boss
Saw MadnessDefeat the Warden in the Castle Dungeon6.0%Boss

For boss preparation, use the Lost Castle 2 Boss Guide.

Soulstone, Soul Seal, and Inscription Achievements

These are not early checklist items. Handle them after Nia, Nightmare, and deeper build systems are available.

Grant Me Power belongs here because its hint points toward the Inscription side of late-game progression, but the achievement does not explain itself like a normal checklist task. Use the hidden-route and Nia progression pages if you are still missing it, then return to this section for Soulstone, Soul Seal, and resonance cleanup.

Lost Castle 2 Nia Nightmare effects interface
Soulstone smelting, fusion, and Soul Seal cleanup become relevant after Nia's deeper systems are available.
AchievementUnlock conditionRateRoute
Grant Me PowerIf you want it, come and get it yourself. You’ve known the rule for a long time.13.0%Inscription / hidden route
Perfect SoulstoneObtain a Level 5 Soulstone7.2%Soulstone
Master of All ArtsUnlock 18 Soul Seals7.1%Soul Seal
War Soul RecastActivate the full resonance of one Soul Seal4.7%Resonance
Constant ImprovementPerform soulstone smelting for the first time at Nia’s4.6%Soulstone
Brilliant SoulstoneObtain a dual-affix Soulstone2.7%Soulstone
Supreme SoulstoneObtain a special Soulstone2.6%Soulstone
Striving for ExcellencePerform soulstone fusion for the first time at Nia’s1.6%Soulstone
Weapon MasterUnlock 27 Soul Seals1.3%Soul Seal
Peak WarriorActivate the resonance of all Soul Seals0.8%Endgame resonance
Soul BurstAchieve your first great success during soulstone fusion0.7%Soulstone fusion

Camp, Collection, and Economy Achievements

These achievements are long-term cleanup goals. They look simple, but they take time.

AchievementUnlock conditionRateBest timing
Senior Treasure CollectorRecord 100 different treasures80.6%Natural midgame
Senior Weapon CollectorRecord 100 different weapons76.7%Natural midgame
Top Treasure CollectorRecord 200 different treasures8.9%Late collection
Top Weapon CollectorRecord 200 different weapons8.4%Late collection
Super Treasure CollectorRecord 285 different treasures5.1%Endgame collection
Equal ExchangeUpgrade the Alchemist’s Hut to max level8.8%Camp upgrade cleanup
Exquisite CraftsmanshipUpgrade the Blacksmith to max level8.4%Camp upgrade cleanup
Unity of PurposeUpgrade the Expedition Camp to max level at Armstrong’s7.8%Camp upgrade cleanup
I Am LegendSynthesize a legendary treasure in one successful adventure5.9%Build / treasure route
High Cost-EffectivenessPurchase all KO treasures from the goblin merchant in camp2.6%Merchant cleanup
ConsumerismPurchase 50 ornaments from the black market merchant in camp1.6%Economy cleanup

Companion Achievements

Each companion achievement asks you to recruit a specific companion and complete a successful adventure. Do these one at a time with a stable build.

AchievementRequirementRateCleanup note
Riverboat SwordsmanRecruit Kasumi and complete a successful adventure2.1%Companion clear
Cold MageRecruit Raven and complete a successful adventure1.4%Companion clear
Forest RangerRecruit Seren and complete a successful adventure1.3%Companion clear
Northern Pale RiderRecruit Navarre and complete a successful adventure1.3%Companion clear
Fiery PassionRecruit Blazeley and complete a successful adventure1.1%Companion clear
Imperial SwordsmanRecruit Shadow and complete a successful adventure1.1%Companion clear

Rare and Special Cleanup Achievements

Save these for late cleanup unless you are already on the exact route. These goals usually ask for a specific build condition, route condition, or long-term tracking, so they are better after your core Nightmare, Mage Tower, and Soulstone routes are stable.

AchievementUnlock conditionRateRoute note
Everything AvailableEquip 3 Alchemy Charms and complete a successful adventure7.0%Alchemy build
Plagued BodyCarry 5 curses and complete a successful adventure3.5%Curse route
Castle BiologistCollect and record all monsters2.4%Monster record cleanup
Dragon Bones UniteCollect all 6 Fire Dragon Souls in one successful adventure1.9%Special route

Full Achievement Lookup Table by Route

Use this table as a lookup tool after you compare your missing achievements with the Steam list. It is grouped by route, not by unlock rate, so you can quickly decide where the missing achievement belongs.

Natural Progression and Early Collection

AchievementRequirementRateRoute
Adventure BeginsEnter the camp for the first time98.4%Natural
Junior Treasure CollectorRecord 20 treasures91.4%Collection
Junior Weapon CollectorRecord 20 weapons90.0%Collection
Intermediate Treasure CollectorRecord 50 treasures86.4%Collection
Intermediate Weapon CollectorRecord 50 weapons83.1%Collection
Senior Treasure CollectorRecord 100 treasures80.6%Collection
Senior Weapon CollectorRecord 100 weapons76.7%Collection

Co-op

AchievementRequirementRateRoute
Party AdventureStart an online multiplayer adventure73.1%Co-op

Weapon Clears

AchievementRequirementRateRoute
ArchmageClear using Staff49.5%Weapon
Ranger HunterClear using Bow46.5%Weapon
Agile SlayerClear using Dual-Blades46.4%Weapon
Heavy Sword WarriorClear using Two-handed Weapons40.0%Weapon
Shadow MasterClear using Phantom Lantern37.0%Weapon
Shield HeroClear using Single-handed weapon35.9%Weapon
MusketeerClear using Musket33.5%Weapon
Steam DemolitionistClear using Turbo Lance25.1%Weapon
BlademasterClear using Katana4.4%Weapon

Bosses and Areas

AchievementRequirementRateRoute
Courtyard CleansingDefeat the Mad Gardener82.8%Boss
Brother, Hold OnDefeat the Goblin Champion81.9%Hidden boss
Wrath of the Black ForestDefeat the Forest Guardian81.8%Hidden boss
Death Duel on the BridgeDefeat the Wandering Knight81.3%Hidden boss
Demon ShadowDefeat Steward the Demon Sealer79.3%Boss
Dreadful MutationDefeat the Mutated Priest74.5%Boss
DuelDefeat the Last Guardian72.6%Hidden boss
Calming the RageDefeat the Angry Thunder Spirit72.0%Boss
Behold My Iron MusclesDefeat the Behemoth71.9%Hidden boss
Dragon’s LairDefeat the Crystal Devourer71.2%Hidden boss
Twin Fiends of the Ruined VillageDefeat Eugene and Bobby70.8%Boss
Ice MaidenFirst enter the Frozen Cave8.0%Area
Misty SwampFirst enter the Mudfish Swamp7.9%Area
Party’s OverDefeat the Frenzy Fishiod Shaman7.6%Boss
Toy UprisingDefeat the Nightmare Maid7.5%Boss
Friendly Neighborhood SpiderDefeat the Giant Hunterspider Queen7.5%Boss
Bushido DuelDefeat the Phantom of the Lost Swordsman7.3%Boss
Vigil EndsDefeat the Frost Colossus7.3%Boss
Flames and SandFirst enter the Saltpeter Desert6.9%Area
Diet ControlDefeat the Treasure Anglerfish6.4%Boss
Caged BeastFirst enter the Castle Dungeon6.3%Area
Boat on Dry LandDefeat the “Captain”6.3%Boss
Dungeon PhantomDefeat A Mysterious Shadow6.1%Boss
Saw MadnessDefeat the Warden6.0%Boss

Difficulty, Memory Shards, and Mage Tower

AchievementRequirementRateRoute
Castle BusClear Normal difficulty11.4%Difficulty
NoviceClear Nightmare difficulty 19.1%Nightmare
Upcoming TalentClear Nightmare difficulty 28.1%Nightmare
Unrivaled MasterClear Nightmare difficulty 37.6%Nightmare
Supreme BeingClear Nightmare difficulty 43.4%Nightmare
Transcendent SaintClear Nightmare difficulty 52.6%Nightmare
Seek the TruthCollect all memory fragments13.0%Memory Shards
Open the GateOpen the gate of the Black Castle4.8%Mage Tower
Unknown RealmEnter the hidden area of the Mage Tower4.0%Mage Tower
Sweet DreamsDefeat the Source of the Nightmare4.7%Mage Tower
MastermindDefeat Lord Alfred in the Mage Tower4.5%Mage Tower
United Blades Against ChaosDefeat The Deceitful Chaos God2.5%Mage Tower

Soulstones, Soul Seals, and Inscriptions

AchievementRequirementRateRoute
Grant Me PowerIf you want it, come and get it yourself. You’ve known the rule for a long time.13.0%Inscription / hidden route
Perfect SoulstoneObtain a Level 5 Soulstone7.2%Soulstone
Master of All ArtsUnlock 18 Soul Seals7.1%Soul Seal
War Soul RecastActivate full resonance of one Soul Seal4.7%Resonance
Constant ImprovementPerform soulstone smelting at Nia’s4.6%Soulstone
Brilliant SoulstoneObtain a dual-affix Soulstone2.7%Soulstone
Supreme SoulstoneObtain a special Soulstone2.6%Soulstone
Striving for ExcellencePerform soulstone fusion at Nia’s1.6%Soulstone
Weapon MasterUnlock 27 Soul Seals1.3%Soul Seal
Peak WarriorActivate resonance of all Soul Seals0.8%Endgame resonance
Soul BurstAchieve your first great success during soulstone fusion0.7%Soulstone fusion

Camp, Economy, Companions, and Rare Cleanup

AchievementRequirementRateRoute
Top Treasure CollectorRecord 200 treasures8.9%Collection
Equal ExchangeMax upgrade the Alchemist’s Hut8.8%Camp
Top Weapon CollectorRecord 200 weapons8.4%Collection
Exquisite CraftsmanshipMax upgrade the Blacksmith8.4%Camp
Unity of PurposeMax upgrade the Expedition Camp7.8%Camp
Everything AvailableEquip 3 Alchemy Charms and clear7.0%Alchemy
I Am LegendSynthesize a legendary treasure in one clear5.9%Treasure
Super Treasure CollectorRecord 285 treasures5.1%Collection
Plagued BodyCarry 5 curses and clear3.5%Curse
High Cost-EffectivenessBuy all KO treasures from goblin merchant2.6%Merchant
Castle BiologistRecord all monsters2.4%Monster collection
Riverboat SwordsmanRecruit Kasumi and clear2.1%Companion
Dragon Bones UniteCollect all 6 Fire Dragon Souls in one clear1.9%Special route
ConsumerismBuy 50 ornaments from black market merchant1.6%Economy
Cold MageRecruit Raven and clear1.4%Companion
Forest RangerRecruit Seren and clear1.3%Companion
Northern Pale RiderRecruit Navarre and clear1.3%Companion
Fiery PassionRecruit Blazeley and clear1.1%Companion
Imperial SwordsmanRecruit Shadow and clear1.1%Companion

FAQ

How many achievements are in Lost Castle 2 v1.0? +

Lost Castle 2 v1.0 has 85 Steam achievements. This guide groups them by route so you can plan hidden achievements, Nightmare clears, Memory Shards, Mage Tower, weapon clears, Soulstones, companions, and collection cleanup.

What is Seek the Truth in Lost Castle 2? +

Seek the Truth is a hidden achievement for collecting all memory fragments. Treat it as part of the Memory Shards and Hidden Mage Tower route instead of trying to finish it randomly.

How do you unlock Party Adventure? +

Party Adventure unlocks by starting an adventure in online multiplayer mode. Handle it as a quick co-op cleanup task instead of mixing first-time multiplayer setup into a serious Nightmare run.

Which weapon achievements are in Lost Castle 2? +

Weapon clear achievements include Archmage for Staff, Ranger Hunter for Bow, Agile Slayer for Dual-Blades, Heavy Sword Warrior for Two-handed Weapons, Shadow Master for Phantom Lantern, Shield Hero for Single-handed weapon, Musketeer for Musket, Steam Demolitionist for Turbo Lance, and Blademaster for Katana.

Which Lost Castle 2 achievements should I do first? +

Start with natural progression, early bosses, and collection milestones. Then route weapon clears, Party Adventure, Nightmare 1-3, Memory Shards, Mage Tower, Nightmare 4-5, Soulstones, Soul Seals, companions, and rare cleanup.

What are the hardest achievements in Lost Castle 2? +

The hardest routes are usually Nightmare 4 and 5, Mage Tower boss clears, full Soul Seal resonance, special Soulstones, all monster records, companion clears, Dragon Bones Unite, and low-unlock hidden achievements.

Should I use the full achievement list while playing? +

Use the full list as a lookup tool, not as your first playthrough route. A route-based plan is faster: progression first, then weapons, Nightmare, Memory Shards, Mage Tower, Soulstones, and final cleanup.