Lostbelt 7: Nahui Mictlan - Spoiler-free Walkthrough
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.
- Nahui Mictlan is a story heavy experience where many of the encounters are more meaningful through experiencing the story. Try not to rush through it!
- Break Bars are a standard feature once again.
- A full Main Story clear for this section requires 497 AP for Part 1, and ~640 AP for Part 2 (which unlocks at a later date), totaling ~1137 AP.
- Part 1: Prologue - Section 10 (12/25/2024 01:00 PDT ~)
- Part 2: Section 11 - End (1/15/2025 00:00 PDT ~)
- Story length estimates are courtesy of the Atlas Academy DB. The entire story length is estimated to be approximately a 4 hour and 28 minute read for Part 1, and 6 hour and 29 minutes for Part 2 (Total 10h 57m for the entirety of LB7).
- Spotted an error, have a question, or ideas to improve the guide? Feel free to drop a comment in the comments section below!
- Have fun and enjoy the story!
Changelog
Walkthrough - Part 1
Walkthrough - Part 2
Additional Guides
In 17-4 (et al):
It says the debuffs will activate after using MORE than Three skills-- it activates AT three skill uses
Thank you, will update this! Should reflect changes in a few minutes.
Section 10-5:
This battle ends after breaking the boss's first HP Bar, or if the entire party falls.
I put mash, a level 1 servant and a support servant. When I got wiped, it was a game over.
Repeating this. It'd be really nice if we could get a guide for this stage too tbh
(Update/Addendum: Yeah I was able to one turn it... with an np5 120 support sitonai, premium battery chargers for full gauge & a crit brave chain (thanks to star bomb ces))
I did it with an NP5 110 Asagami Fujino + Double Koyan and Merlin
I didn't one turn it but went in with my Super Orion and a borrowed Yang Guifei, though I imagine any high damage setup will do.
Can confirm, that first bar MUST be cleared before you wipe, failing to do so will kick you to the retry screen.
I had the same problem - turns out it's breaking the first HP bar AND then the entire party falls, not "or" the entire party falls. I put in a weak team 2-3 times to let them get wiped asap but couldn't trigger the continuation of the story until breaking the first HP bar and then everyone getting wiped.
I did that too. Luckily the fight was fairly easy
St. 5-4: There are actually 2 Sabers (70k-73k HP) and 1 Archer (68k HP).
Interlude 1 is wrong, the field effect only gives the NPC/solo support servant full np gauge on the THIRD turn, not the battle start.
There's also one archer in 5-4 + the two sabers, not three sabers like the guide says, so that's also wrong as well.
After the update to P2, it keeps automarking all of P2 as completed for me (even after ive unchecked them all) :(
Looks like there was a bug in the code, fixing! Should update in a few minutes.
19-4 : Number of enemies actually depend on the number of servants you have in your team (so it can be as low as 3, instead of 6)
Thanks, updated! Will reflect on the page in a few minutes.
The effectiveness of the enemies' atributes also depend of the number of allied Servants deployed. The damage reduction and atk increase with 6 servants is almost absurd.
Relatively small, but it'd be useful to denote/count the different Raid stages by break bar too (i.e. Raid 1-1, Raid 1-2, etc) somehow
In 22-7 Nemo's portion is wrong (Nemo is a male and his Noble Phantasm is ARTS not buster, seems like whoever wrote the detailed entry copy-pasted Koyanskaya's part of the description)
Section 3-5 says : -
After 10 turns, she restores all 3 HP bars and her health and any debuffs are recovered.
* Prevented by having a Goddess Metamorphosis Servant.
I clicked on the Metamorphosis Servant link, on the list was Tamamo Caster, so I put her in.
She was in my frontline, at turn 11, I used her skills on my team then attacked, after the attack. The boss restored all 3 HP bars.
I used tamamo and she did prevent her from full healing
I think you have to put her in the front line at the very beginning before battle start
Uh, why is the first battle labeled as "filler"?
Seriously, I've restarted this three times already (First time was calibrated to Filler level difficulty), this is "Hard," or at the bare minimum "Moderate."
Servant Tier ListLostbelt 7: Nahui Mictlan - Spoiler-free Walkthrough
Servants
Kukulcan
Summon Simulator (NA)
Solar Hide
Summon Banner List
Summon Simulator (JP)
Tlaloc
Tezcatlipoca- Boss Guide: Ch17-6 (Lostbelt 7 Nahui Mictlan Part 2)Lostbelt 7: Nahui Mictlan - Main QuestsBoss Guide: Ch23 (Lostbelt 7 Nahui Mictlan Part 2)Cosmic Sea of Trees Decisive Battle / Invasive Mobile Life-form ORTBoss Guide: Ch22-8 (Lostbelt 7 Nahui Mictlan Part 2)
Pope JohannaBoss Guide: Ch10-3 (Lostbelt 7 Nahui Mictlan Part 1)Cosmic Sea of Trees Decisive Battle / Invasive Avian Life-form ORT
Biscione
Sodom's Beast / Draco - Boss Guide: Ch10-2 (Lostbelt 7 Nahui Mictlan Part 1)Act 23: The Fifth Sun
Larva / TiamatAct 19: World Tree (4/5)Act 19: World Tree (2/5)Act 17: Fourth Underworld: Yayauhqui (6/6)
Koyanskaya of Light
Scathach-Skadi (Ruler)
OberonAct 19: World Tree (3/5) - Act 21: Cosmic Sea of Trees Decisive Battle (1/7)Lostbelt 7: Nahui Mictlan - Free QuestsAct 22: The Sovereign of the Planet (8/8)O.R.T
Xu Fu
Obsidian BladeLostbelt No.7: Golden Sea of Trees, Nahui Mictlan - Those Who Rule the PlanetAct 15: Flower War (6/8)Act 17: Fourth Underworld: Yayauhqui (4/6)Act 20: O R T (1/3) 
MorganAct 22: The Sovereign of the Planet (7/8)LevitatingLostbelt 7: Nahui Mictlan - Boss Guides
Savior Aesc
Space EreshkigalAct 18: Aquatic Capital (Aztlán/Calakmul) (3/3)
Archetype Earth
Britomart
Nitocris (Alter)
