This survey will take about 1 minute.
Your answers will help us to improve our website.
The First Descendant
Caligo Ossuary Mission Walkthrough and Rewards
Please note that the First Descendant Team has stopped covering the game as of October 2024. Information on certain pages may not be up-to-date.
Caligo Ossuary is a mission in The First Descendant. Read on for a full walkthrough of Caligo Ossuary, its location, rewards, and how to beat Sigvore the Blast Hunter.
List of Contents
Caligo Ossuary Location
Agna Desert
 Agna Desert (The Mining Site) |
Caligo Ossuary Walkthrough
Caligo Ossuary Objectives
| Caligo Ossuary Objectives | |
|---|---|
| 1 | Go past the rotating laser beams. |
| 2 | Defeat the Elite Vulgus War-Slave |
| 3 | Activate the decryption protocol. |
| 4 | Defeat Sigvore the Blast Hunter |
| 5 | Interact with the terminal to view the Ancestors' data. |
Go Past the Rotating Laser Beams
As soon as you enter the Caligo Ossuary and clearing out some surveillance zones, you will encounter three sets of rotating laser walls. Once the lasers rotate away from the path, use your grappling hook on the rock above to quickly glide towards the other side safely.
Defeat the Elite Vulgus War-Slave
In the area following the laser beams, there will be a locked blast door that you'll have to open by killing the Elite Vulgus War-Slave guarding it. The War-Slave will only appear once you defeat all the other enemies guarding the blast door.
Activate the Decryption Protocol
Guide will instruct you to activate the Decryption Protocol by destroying three Vulgus Technology Devices around the complex.
After damaging a device down to half of its health, it will become immune to damage. You will have to defeat all enemies that have spawned in the area to remove its immunity.
Defeat Sigvore the Blast Hunter
Sigvore the Blast Hunter is the final boss that you will have to beat in the Caligo Ossuary. Fighting him is a bit tricky as he'll deploy several poison bombs and barrels around the area. The best way to defeat him is to always be on the move since he usually throws and detonate his poison bombs on where you're standing at.
How to Beat Sigvore the Blast Hunter
View the Ancestors' Data
Once Sigvore is defeated, interact with the terminal to view the Ancestors' Data and complete the mission.
How to Beat Sigvore the Blast Hunter in Caligo Ossuary
| How to Beat Sigvore the Blast Hunter |
|---|
|
|
Avoid Stepping on the Poison
Sigvore has the ability to deploy multiple poisonous barrels. Due to the heat of the battle, you might accidentally shoot these, causing the poison to leak out on the floor. When this happens, avoid stepping on it as your shield will instantly be reduced to zero.
Destroy the Spheres to Cancel Out His Invulnerability
Like most bosses, Sigvore can summon spheres which grant him invulnerability. You can destroy these to cancel it out, however there's a catch. These spheres can become immune to damage after a while, so you can't just destroy them easily. You'll have to wait it out before the spheres become vulnerable again before you can shoot them.
Caligo Ossuary Rewards
| All Caligo Ossuary Rewards |
|---|
|
・Matrix Recomputation (1.6%) ・Shape Stabilizer Form 5 (2%) ・Fire Conductor (3%) ・Anti-matter Round (20%) ・Sharen Code (20%) ・Superheated Gunbarrel (20%) ・Toxic Mechanics Reactor (50%) ・Blue Blood Boomer (50%) ・Immediate Execution (50%) ・Burning Mixture Reactor (50%) ・Amorphous Material Pattern 030 (100%) |
The First Descendant Related Guides
All Mission Types
| Zone Recon | Calling of the Descendant |
Kingston Missions
| Field Communications Center | Urban District | The Last Emergency Communicator |
| Kingston Communications Repeater | Vulgus Field Generator | Magister Lab |
| Suspicious Battery Pack | Vulgus Data Transmitter | Kingston Surveillance Radar |
| Slumber Valley |
Sterile Land Missions
| Anticipated Ambush Point | Deception Transmitter | Patrol Route |
| External Reactor | Kuiper Mine | Kuiper Refinery |
| Kuiper Storage Tank | The Barracks | The Base's Power Grid |
| Defense Garrison Rally Point | High-powered Jammer | The Forgottense |
| Logistics Facility | Wastewater Treatment Plant | Weapon Processing Facility |
| Large Nuclear Reactor | Biological Research Facility | Weapons Engineering Facility |
| Unknown Laboratory |
Vespers Missions
| Lakeside | Floodplain | Old Surveillance Station |
| Ruins Courtyard | Ruins Underground Entrance | Destroyed Temple |
| Captured Base | Abandoned Village | Mossy Colossus |
| Sepulcher | Ancient Giant Tree | Supply Depot |
| Timberfall Power Facility | Organic Recording Material | The Shelter |
Echo Swamp Missions
| Arche Motion Sensor | The Tree of Truth | Environment Contamination Zone |
| Abandoned Refinery Unit | Seed Vault | Hazy Swamp |
| Traces of Colossi Interceptions | Kuiper Transport Route | Verdant Greenery |
| Field Energy Station | Emergency Landing Strip | Ghost Marsh |
| The Chapel |
Agna Desert Missions
| Baggage Transport Waste | Rock Cave Base | Surveillance Location |
| The Asylum | Outpost Workshop | Abandoned Reconstruction Site |
| Stolen Spectral Digger | Kuiper Depot | Previous Construct Team Quarters |
| Excavation Team Directional Radar | Ossuary | Mining Beacon |
| Caligo Ossuary | Heavy Equipment Entry Path | Commanding Ground |
White-night Gulch Missions
| Order's Patrol Beat | Decoy Operation Zone | Triumphal Arch |
| Ancient Transmission Detection Facility | Borderline of Truth | Cave Rally Point |
| Water-Cooling Recording Device | Forgotten Comms Device | Deployment Area of the Order's Forces |
| Mystery's End | Order's Veil | Order's Occupied Facility |
| Eye of Truth | Order Supply Warehouse | Fortress Outskirts |
| Fortress Control Facility | Fortress Courtyard | DNA Detector Spray Zone |
| Altar | Upper Hatchery | Lower Hatchery |
| Bio-Lab |
Hagios Missions
| Vulgus Blockade | Recon's Squad Trail | Ally Retreat Route |
| Ransacked Village | Crimson Contaminated Area | Deep Digger |
| The Haven | Large Supply Transport Point | Ruins Modification Base |
| The Cliff | Cargo Management Zone | Broadband Fleet Beacon |
| Antiaircraft Defensive Position | The Passage to the Ruins | Ancient Quantum Facility |
| Ruins Guard Facility | Tethered Energy Position | Old Mystery |
Fortress Missions
| Outlying Communications Facility | Snowy Heights | Gate System Control Network |
| Munitions Loading Dock | Command Relay | Ship Charging Facility |
| Frozen Shipyard | Quarantine Zone | Giant Hangar |
| High-Thermal Source Detected Zone | Central Control Unit | Destroyed Base |
| Explosive Debris | Fortress Command Entrance | Heart of the Fortress |
Comment
Author
Caligo Ossuary Mission Walkthrough and Rewards
Please participate in our site
improvement survey
12/2025
improvement survey
12/2025
Would you assist in
improving Game8's site?
improving Game8's site?
×
We are listening to our users' valuable opinions and discussing how to act on them.
The information collected through this survey will be used for the purpose of improving our services. In addition, the information will only be disclosed a part of a statistic in a format that will not allow identification of personal information.
Begin Survey
Not Now
×
Please rate each item regarding Game8.co's Advertisements.
Amount of Ads
Very Dissatisfied
Somewhat Dissatisfied
Fine
Somewhat Satisfied
Highly Satisfied
Placement of Ads
Timing of Ad Display
Ad Loading Speed
Safeness of Ads
Content of Ads
×
Please rate each item regarding Game8.co's Quality of Articles.
Amount of information
Very Dissatisfied
Somewhat Dissatisfied
Fine
Somewhat Satisfied
Highly Satisfied
Frequency of updates
Speed of new information
Accuracy of articles
Understandibility of articles
Readability of sentences
×
Please rate each item regarding Game8.co's Usability of the Site.
Ease of finding information
Very Dissatisfied
Somewhat Dissatisfied
Fine
Somewhat Satisfied
Highly Satisfied
Loading Speed
Use of Color
Font Size
Visibility of Images
Easy to Understand Layout
×
Please rate each item regarding Game8.co's Message Boards, Comments.
Ease of Writing
Very Dissatisfied
Somewhat Dissatisfied
Fine
Somewhat Satisfied
Highly Satisfied
Readability
Ease in Finding Information
Comment Quality
Comment Quantity
Admin Response
×
Please rate each item regarding Game8.co's Site's new design.
Please rate our site's new design
Very Dissatisfied
Somewhat Dissatisfied
Fine
Somewhat Satisfied
Highly Satisfied
Do you think that the website's design change makes the site easier to use?
Has the new design made it easier for you to find information on the site?
Has the new design improved the overall visual appeal of the site?
How would you rate your overall satisfaction with the new design of the site?
×
How likely are you to recommend Game8 to someone you know?
Very Unlikely
0
1
2
3
4
5
6
7
8
9
10
Very Likely
If you have other opinions regarding potential improvement to the website, please share them with us. We would appreciate your honest opinion.
Note: This is a free response section, so you can proceed without entering anything.
Note: Please be sure not to enter any kind of personal information into your response.
Note: Please be sure not to enter any kind of personal information into your response.
×
Thank You
×
Thank you for participating in our survey! Your answers will help us to improve the quality of our website and services.
We hope you continue to make use of Game8.
We hope you continue to make use of Game8.
Close
Rankings
- We could not find the message board you were looking for.
Gaming News
![Octopath Traveler 0 Review [First Impressions] | Familiar, But Better](https://img.game8.co/4357336/fcaf07d58cc243e6b7319ca9b118ba16.png/thumb)
Popular Games
Genshin Impact Walkthrough & Guides Wiki
Umamusume: Pretty Derby Walkthrough & Guides Wiki
Where Winds Meet Walkthrough & Guides Wiki
Honkai: Star Rail Walkthrough & Guides Wiki
Digimon Story: Time Stranger Walkthrough & Guides Wiki
Wuthering Waves Walkthrough & Guides Wiki
Zenless Zone Zero Walkthrough & Guides Wiki
Pokemon TCG Pocket (PTCGP) Strategies & Guides Wiki
Pokemon Legends: Z-A Walkthrough & Guides Wiki
Clair Obscur: Expedition 33 Walkthrough & Guides Wiki
Recommended Games
Yu-Gi-Oh! Master Duel Walkthrough & Guides Wiki
Diablo 4: Vessel of Hatred Walkthrough & Guides Wiki
Fire Emblem Heroes (FEH) Walkthrough & Guides Wiki
Elden Ring Shadow of the Erdtree Walkthrough & Guides Wiki
Super Smash Bros. Ultimate Walkthrough & Guides Wiki
Monster Hunter World Walkthrough & Guides Wiki
Pokemon Brilliant Diamond and Shining Pearl (BDSP) Walkthrough & Guides Wiki
The Legend of Zelda: Tears of the Kingdom Walkthrough & Guides Wiki
Persona 3 Reload Walkthrough & Guides Wiki
Cyberpunk 2077: Ultimate Edition Walkthrough & Guides Wiki
All rights reserved
© NEXON Korea Corp. & NEXON Games Co, LTD. All Rights Reserved.
The copyrights of videos of games used in our content and other intellectual property rights belong to the provider of the game.
The contents we provide on this site were created personally by members of the Game8 editorial department.
We refuse the right to reuse or repost content taken without our permission such as data or images to other sites.