Prepare to Explore the Sigma Sector with the New Update for The First Descendant

jasonnieva March 14, 2025

Update 1.2.10 for The First Descendant is now live. There's a lot to be excited about and one of these is the Main Quest which is Sigma Sector. It takes place after the Descendant Corps destroyed the first Ironheart.

The main quest is available once the Fortress zone main quest is completed. During the main quest, those who complete the Basics Training for Descendants get to check the List of Major Battlefields during the Apocalypse in a record. Meanwhile, those who investigate all traces of the Early Descendants listed in this record can receive a special Chest Attachment.

Sigma Sector Dropoff Operation

With a new main quest, players can now enjoy the Sigma Sector Dropoff Operation. This new content becomes available to those who can complete the main quest "Responsibility, Regret, and Atonement."

Features of the Sigma Sector Dropoff Operation include:

  • A new field, Sigma Sector, is added.
  • Sigma Sector features a new type of monsters from the Legion of Immortality, the Defects.
  • Sigma Sector consists of two zones, Broken Boundary and Isolated Desert, with two difficulty levels, Normal and High-risk, based on the Storm Level.
  • One of the four missions for each zone and difficulty level is randomly selected and carried out.
  • Reaching Mastery Rank 15 and completing an Isolated Desert mission unlocks Broken Boundary on High-risk Difficulty.
  • Completing a Broken Boundary mission on High-risk Difficulty unlocks Isolated Desert on High-risk Difficulty.
  • Defeating certain monsters in Sigma Sector will drop Sigma Sector exclusive unique weapons, Ground Custodian.
  • When players acquire a Ground Sweeper, they can deal more damage to enemies or destroy the enemy's giant transport ships more effectively.


During the Sigma Sector main quest, players can earn these rewards that help their Descendant:

  • Upon completing ‘Operation Unbelievable’: 1 Energy Activator, Nimble Fingers +5, Skill Expansion +5, HP Amplification +5
  • Upon completing ‘Ultimate Troublemaker’: Electric Condense +5, Focus on Electric +5, Focus on Singular +5
  • Upon completing ‘Fix What We Broke’: Contagion +5, Focus on Toxic +5, Focus on Tech +5


See what else the new update brings to the game here.

The First Descendant is a third-person looter shooter and free-to-play game released back in June 2024. It invites players to be a Descendant and fight for the survival of humanity. Get The First Descendant on Steam now.