Once Human: How to Complete LEA Research Lab

LEA Research Lab is considered one of the hardest dungeons in Once Human, and there is a clear reason for that. There are massive enemies that are attacking you from multiple sides and handling them is a nightmare for solo players specifically. Don’t worry, here in our guide to LEA Research Lab, we are going to share all the information on How to Complete LEA Research Lab Dungeon in Once Human, whether you are solo, or playing with your teammates.

You need a strong build for completing LEA Research Labs: Consider giving our Once Human Best Endgame Build Guide – Best Solo Boss Build! a chance.

1st Phase – Ice and Fire Deviant

Once Human LEA Research Lab First Phase - Ice and Fire Deviants with Securement Tubes
Once Human LEA Research Lab First Phase – Ice and Fire Deviants with Securement Tubes

Getting started, there are two deviants, the ice and fire deviants. On the left is the ice deviant, and an ice securement tube is to the left of the deviant.

On the right, there is the fire deviant, and a fire securement tube to capture the deviant.

How to complete the first phase of the LEA Research Lab and beat the two ice and fire deviants?

  • When you kill the fire deviant, you need to stand on the fire securement tube to the right, and the soul of the deviant will be captured in the tube
  • When you kill the ice deviant, you need to stand on the ice securement tube to the left, and the soul of the deviant will be captured in the tube.

2nd Phase – Dr Mannheim Boss, Three Fire Deviants, and Two Ice Deviants

Once Human LEA Research Lab Second Phase - Dr Mannheim Boss Fight
Once Human LEA Research Lab Second Phase – Dr Mannheim Boss Fight

In this phase, you need to understand that there are three fire deviants and then two ice deviants alongside a boss fight called the Dr Mannheim. The concept remains the same to complete the second phase of the LEA Research Lab.

Here’s how to complete the second phase of the LEA Research Lab, defeating Dr Mannheim Boss Fight, the Fire, and the Ice Deviants.

  • Stand on the ice securement tube for the ice deviant.
  • Stand on the fire securement tube for the fire deviant to secure them after killing them.
  • After all the securement tubes are filled, you need to stand on the higher ground to fight the boss. The boss uses a skill that wipes everyone on the ground, sending waves that drain the health.
  • When the shield is ON, you need to head inside and fight the boss.

Also check out: Once Human: Best Weapons and Mods Build for PvE and PvP

Second Three- Underground Puzzle and Mother of Life Boss

LEA Research Lab Underground Puzzle
LEA Research Lab Underground Puzzle

Once you head underground, this is like a parkour. You need to stand on the tube and shoot the floating blocks, and after it becomes ice, you have to cross quickly.

LEA Research Lab Phase 3 - Mother of Life Boss Fight
LEA Research Lab Phase 3 – Mother of Life Boss Fight

When the boss fight “Mother of Life” appears in phase 3 of the LEA Research Lab Once Human, you need to apply the same mechanics.

  • Once you hit the boss HP two bars, the fire and ice cubes come into play.
  • The disciple monsters will appear near the door, and they drop stardust. You have to use the stardust to blast the spores appearing around the area.
  • The boss will become immune.
  • After all four securement tubes fill up with the deviants, you can start damaging the boss again.
  • In the last two bars, the boss will again become immune. So, you have to repeat the same things, securing the deviant in the securement tube.

This is how you can kill the Mother of Life Boss in the LEA Research Lab Dungeon in Once Human, and complete it.

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