Borderlands 4: No Sunrise Side Mission (Full Walkthrough)

No Sunrise is a DLC side mission tucked inside Tediore FOB Bravo Lima 4.2 on Providence Island. It is short, takes roughly two minutes of actual play once you know the path, and ends with a boss fight against Kolavalin and an assault rifle reward called the Synchronized Spec-Tec.

Quick answer: Accept No Sunrise at the mission console inside Tediore FOB Bravo Lima 4.2, place the extra Digi-Gauntlet on it, follow the lava caverns to the enclosure, drop into the arena and kill Kolavalin, then claim the Synchronized Spec-Tec from the mission reward screen.

No Sunrise requirements and mission details

The mission is gated by ownership, not by story progress. Every player in the session has to own FL4K and the Lost Resort content, otherwise the mission will not advance for the group. The mission description frames it as a Tediore wildlife experiment gone wrong, which is a fair warning about what you fight at the end.

Detail	Value
Mission type	DLC side mission
Region	Providence Island
Start point	Mission console in Tediore FOB Bravo Lima 4.2
Ownership requirement	All players must own FL4K and the Lost Resort
Objectives	Place extra Digi-Gauntlet → Reach Enclosure → Kill Kolavalin
Boss	Kolavalin
Reward	Synchronized Spec-Tec assault rifle

How to start No Sunrise in Tediore FOB Bravo Lima 4.2

Open the map and select Tediore FOB Bravo Lima 4.2 on Providence Island. The No Sunrise entry shows up as a DLC Side Mission Giver marker, so you can confirm you are heading to the right place before you travel.

Head into the cave system below. The route is a dark cavern with lava running through it, and the waypoint counts down the distance as you go, so keep to the marker rather than exploring side passages.

Objective marker showing 16 m ahead while running through the dark cavern in Tediore FOB Bravo Lima 4.2 — The HUD marker counts down the distance to the mission console as you move through the cavern. Image: Gearbox Software

Interact with the console to accept No Sunrise. The first objective, Place extra Digi-Gauntlet, resolves at the same console, so do that immediately and the marker will move on to the enclosure.

Route to the enclosure through the lava caverns

Follow the Reach Enclosure marker across the lava. The path is a series of short platform jumps over the flow, with metal grates you can climb to gain height, so treat it as a movement section rather than a fight.

Player jumping between ledges above flowing lava on the way to the enclosure — The route to the enclosure is a run of jumps over lava and climbs up metal grating. Image: Gearbox Software

Clear the enemies that block the path. An Ice Breaker Pyromaniac shows up partway through, and dealing with it before you keep moving avoids taking chip damage while you are mid-jump.

Stock up at the vendors near the end of the route. A Dr. Zed’s Meds machine and a Guns machine sit just before the arena, which is the last chance to top up ammo and grab a different element before the boss.

Reach Enclosure objective active while aiming at two containers near the end of the cave route — The Reach Enclosure objective stays active right up to the drop-in point. Image: Gearbox Software

How to beat Kolavalin

The fight triggers the moment you drop into the arena below the enclosure, so do not jump down until you are reloaded and healed. Kolavalin is the flesh-and-steel abomination the mission text refers to, and it can appear well above your own level.

Corrosive damage is the element that works here. A corrosive weapon brings the boss down quickly even when it out-levels you, and the mission is short enough that the experience from the kill alone can push you up a level.

Reload prompt highlighted on the HUD during the Kolavalin boss fight — Reloading between bursts keeps corrosive damage on Kolavalin without pauses. Image: Gearbox Software

Tip: reload during the boss’s movement rather than while you are standing still in the open. The arena is small and there is nowhere useful to break line of sight for long.

Claiming the Synchronized Spec-Tec reward

Killing Kolavalin ends the mission immediately. You will see the Side Mission Complete banner on screen, which is the confirmation that it registered, and the Synchronized Spec-Tec then waits on the reward screen. Open the mission log or inventory and accept it, since the gun does not go straight into a weapon slot.

Rewards screen with the Synchronized Spec-Tec assault rifle highlighted for selection — The Synchronized Spec-Tec is picked up from the mission reward screen after the kill. Image: Gearbox Software

The version handed out at level 70 carries a Daedalus trait, where the secondary fire draws from your sniper rifle ammo pool. That matters for how you feed it, because heavy secondary use will drain a reserve you may be keeping for another gun.

Synchronized Spec-Tec (Level 70)	Value
DPS	18,344
Damage	3,585
Accuracy	81%
Handling	58%
Reload time	3.1s
Fire rate	8.83/s
Magazine size	36
Special	Daedalus — secondary fire consumes sniper rifle ammo

Why No Sunrise will not progress

There is one hard blocker worth checking before you travel. Every player in the session needs FL4K and the Lost Resort, so a co-op partner without that content will stop the mission from moving forward even if you can see and accept it yourself. Splitting off and running it solo, or matching with players who own the same content, resolves it.

The other common stall is the opening objective. Accepting the mission and placing the extra Digi-Gauntlet are two separate actions at the console, and if the Reach Enclosure marker has not appeared, the Digi-Gauntlet has not been placed yet.

If you want the Synchronized Spec-Tec at your current level rather than the one you first earned it at, the mission is compact enough to rerun from the missions menu once you have outlevelled it.