After wrapping up Rising Action,
you’ll jump straight into the next main mission in Borderlands 4 — Another
Day, Another Universe. This quest takes you deep into Elpis (The Moon)
where the objective is simple on paper: find and free Lilith. But along
the way, you’ll battle Rippers, Order soldiers, Threshers, and eventually face
a deadly returning boss — Moon-Maddened Callis.
This walkthrough covers every step of the mission, from oxygen management to the climactic fight at the Elpis Core.
Mission
Information
- Quest Giver:
Amara
- Location:
Elpis (The Moon)
- Requirements:
Complete Rising Action
- Recommended Level:
25+
- Time to Complete: ~45–50 minutes
Objectives
- Collect oxygen kit and supply Zane/Amara
- Reach Elpis Core and clear out Rippers/Order forces
- Throw explosives into thrusters and activate engine
- Clear enemies, take elevator to surface
- Find power source, start reactor, spin turbines
- Restart reactor, escort Amara to Core
- Enter Phase Dimension, locate Lilith
- Defeat Moon-Maddened Callis and wake Lilith
Step
1: Collect Oxygen Kits
At the start of Another Day,
Another Universe, grab the Oxygen Kit to the right. You’ll need to
supply extra kits to Amara and Zane so they can survive outdoors. Follow quest
markers to Ripper corpses where glowing blue Oxygen Kits can be looted.
Activate Oxygen Fields in the wild to give your allies breathing room. Watch out for Wyrms and flying Threshers — they deal heavy damage.
Step
2: Clear the Path to Elpis Core
Make your way along the linear path.
Soon you’ll encounter a chaotic fight between Rippers and Order
minions. They’re enemies to each other, but you’ll need to clear both
sides. Use respawn points and cover wisely; enemies spawn in waves.
Tip: Playing as Vex? Drop Specters around the map to handle reinforcements.
Step
3: Thruster Explosives
Once the battlefield is clear, follow your marker to the engine activation switch. It won’t work, so the solution is explosives. Activate your ECHO-4 scanner to reveal three bright green explosive caches. Throw them into the thrusters, then re-activate the engine to move forward.
Step
4: Elevator to Surface
Continue along floating islands and
make use of boost platforms and grapple points to cross gaps.
Keep an eye out for a Vault Symbol along the way — it’s right on the main path.
Clear the enemies guarding the elevator and activate it.
Step
5: Power Source & Turbines
The elevator is offline, so Claptrap steps in. Follow markers to the power console and interact with it. Next, you’ll need to spin up turbines by grappling repeatedly. Do this for multiple turbines in the area.
Step
6: Restart Reactor & Escort Amara
Return to the power console and restart the reactor. Psychos and Badass enemies will swarm the area — defeat them to protect Amara. Once the fight ends, escort her to the Elpis Core using the elevator.
Step
7: Enter Phase Dimension & Find Lilith
Fight your way through grapple
climbs and wall climbs until you reach a console. Just then, Callis, the
Ripper Queen, reappears — revealing she survived your earlier encounter.
After Callis wrecks your ship, push forward to help Zane and Amara, who are pinned down by Rippers. Once cleared, Amara will phase you into the Phase Dimension, a surreal multicolored realm. Here, you’ll find Lilith — but she collapses upon exiting the dimension.
Step
8: Boss Fight – Moon-Maddened Callis
Prepare for a tough battle. Moon-Maddened
Callis returns stronger with a two-layered shield and health bar. Her attacks
include:
- Web Phase:
Becomes invulnerable, covering the area in spider webs.
- Ignite DOT Projectiles: Inflicts heavy burn damage.
- Destructo Disc Attack: A devastating DBZ-style energy disc that can one-shot
if not dodged.
Tips to win:
- Use Corrosive and Ignite damage for
efficiency.
- Save suicide bomber enemies for Second Winds.
- Stay mobile to dodge her lethal jump and disc attacks.
When she falls, you’ll wake Lilith and trigger the next cinematic sequence.
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