Introduction
- The spoilers in this walkthrough are limited to what enemies you will face in a particular node.
- Every major boss and Servant encounter is initially hidden. Hover over unknown icons to see what mob/Servant is hidden via its hyperlink.
- Press the New Monster Information or Boss Information headers to see specific spoilers, advice and/or tips.
- Tunguska Sanctuary is the first story heavy chapter that also is limited! If running short on time, Masters can always read the story in the My Room archives.
- Break Bars are a standard feature once again.
- A full Main Story clear for this section requires 95 AP.
- Story length estimates are courtesy of the Atlas Academy DB. The entire story length is estimated to be approximately a 2 hour and 45 minute read.
- Spotted an error, have a question, or ideas to improve the guide? Feel free to drop a comment in our Discord!
- Have fun and enjoy the story!
Walkthrough
| Filler | Easy | Moderate | Hard | Very Hard |
| # | Node | Enemy Classes | Enemies & Difficulty | Notes |
| 1 |  Intro | Story only. Story: ~3min read | ||
| 2 | Departure | Story only. Story: ~14min read | ||
| 3 | Prologue | Story only. Story: ~3min read | ||
| 4 |  St. 1-1 | Story only. Story: ~1min read | ||
| 5 | St. 1-2 | Story only. Story: ~8min read | ||
| 6 | St. 1-3 | Story only. Story: ~4min read | ||
| 7 |  St. 1-4 | Story only. Story: ~3min read | ||
| 8 | St. 2-1 |     |    | Two waves, the first with a Saber, Assassin, and Archer (47-57k HP), the second with three Berserkers (63-131k HP). At battle start, an effect increases damage taken by any [Hominidae] trait Servants by 1,500, and for [Demonic Beast] trait Servants, they get a Damage Cut of 500. Story: ~4min read |
| 9 |  St. 2-2 |   |    | Party Restriction: Cannot deploy Habetrot A single wave with three break bar enemies: a Berserker (98k, 179k), Lancer (106k, 182k), and Rider (101k, 180k HP). The Berserker and Lancer inflict debuffs with normal attacks, while the Rider gives a passive defensive buff to enemies while it is alive. Berserker Break: Give 50% Evade and Sure Hit to all allies, seal Order Change for the party. Lancer Break: All enemies gain 20% chance of buff removal with normal attacks, and an extra 1 NP Bar each turn. Rider Break: Give 3-time Invincibility to all enemies and a minor 3-time, 3 turn DEF buff. Using Mash's Black Barrel Skill will cause NPC Habetrot to appear and use her NP, inflicting the enemy with ATK and Damage Resist debuffs, and removing their Invincibility. Taking the Ibuki-Douji NPC Support gives her a myriad of strong buffs, including immunity to NPs and Debuff Immunity. Story: ~2min read |
| 10 | St. 3 | Story only. Story: ~3min read | ||
| 11 | St. 4-1 | Story only. Story: ~1min read | ||
| 12 | St. 4-2 | |   | Miniboss encounter! Click on Boss Information below for specifics. Story: ~6min read |
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| 13 | St. 4-3 | | | Miniboss encounter! Click on Boss Information below for specifics. Story: Pre-battle ~2min read Post-battle ~1min read |
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| 14 | St. 4-4 | Story only. Story: ~4min read | ||
| 15 |  St. 4-5 | Story only. Story: ~2min read | ||
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| 16 | Raid 1 | | | This unlocks once the raid is completed! Check out the Raid Quests for information on the Raid encounters. Boss encounter! Click on Boss Information below for specifics. |
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| 17 | St. 5-1 | Story only. Story: ~2min read | ||
| 18 |  St. 5-2 | Story only. Story: ~7min read | ||
| 19 |  St. 5-3 | Story only. Story: ~5min read | ||
| 20 |  St. 6-1 | Story only. Story: ~4min read | ||
| 21 | St. 6-2 | |  | Two waves of three Assassins each (71-150k HP). Enemies have an unremovable 1-time Guts (1k HP Revival) and minor offensive buffs, which are further amplified if they defeat any Servants. Story: ~2min read |
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| 22 | St. 7-1 |  |  | Two waves, with 5 Assassins (71-107k HP) and 1 Ruler (201k HP) in the second wave this time. This encounter is otherwise mostly identical to the prior encounter. Enemies have an unremovable 1-time Guts (1k HP Revival) and minor offensive buffs, which are further amplified if they defeat any Servants. Story: ~1min read |
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| 23 |  St. 7-2 | Story only. Story: ~3min read | ||
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| 24 | Raid 2 | | | This unlocks once the raid is completed! Check out the Raid Quests for information on the Raid encounters. Boss encounter! Click on Boss Information below for specifics. |
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| 25 | St. 8 | Story only. Story: ~9min read | ||
| 26 | St. 9-1 | Story only. Story: ~2min read | ||
| 27 | St. 9-2 | Story only. Story: ~10min read | ||
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| 28 | Raid 3 | |   | This unlocks once the raid is completed! Check out the Raid Quests for information on the Raid encounters. Boss encounter! Click on Boss Information below for specifics. |
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| 29 | St. 10-1 | Story only. Story: ~3min read | ||
| 30 | St. 10-2 |  | | Boss encounter! Click on Boss Information below for specifics. Story: Pre-battle ~2min read Post-battle ~3min read |
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| 31 |  St. 10-3 | Story only. Story: ~2min read | ||
| 32 | St. 11-1 | Story only. Story: ~2min read | ||
| 33 | St. 11-2 | | | A single wave with a total of 12 mixed Assassins and Rulers (20-55k HP). Enemies have an unremovable 1-time Guts (1k HP Revival) and minor offensive buffs, which are further amplified if they defeat any Servants. Story: ~7min read |
| 34 |  St. 11-3 | Story only. Story: ~11min read | ||
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| 35 | Raid 4 | | | This unlocks once the raid is completed! Check out the Raid Quests for information on the Raid encounters. Boss encounter! Click on Boss Information below for specifics. |
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| 36 | St. 12-1 | Story only. Story: ~4min read | ||
| 37 | St. 12-2 | Story only. Story: ~5min read | ||
| 38 | St. 12-3 | Story only. Story: ~14min read | ||
| 39 | St. 13-1 | Story only. Story: ~5min read | ||
| 40 | St. 13-2 | Story only. Story: ~2min read | ||
| 41 | St. 13-3 | Story only. Story: ~2min read | ||
| Congratulations! The Tunguska Sanctuary chapter is completed! |
