To complete the Kairos Speaks Challenge in Borderlands 4, you must find and collect all the hidden ECHO Logs on the map. These are a type of regional collectible. You can find your collected logs in the ECHO Logs section of your inventory. All General ECHO Logs count as collectibles, but only 25 of the Mission ECHO Logs do, and these can only be found during the associated Side Mission.
Below is a complete list of the ECHO Logs needed to complete the challenge. Each link will take you to a detailed guide for that region, showing the ECHO Log’s exact location and any Side Mission required to access it.
All General ECHO Logs Alphabetical
All General ECHO Logs are necessary to complete the “Kairos Speaks” Challenge.
A Day in the Order: Approved Terminology
A Day in the Order: Safety Precautions
A Day in the Order: Weapons Training
A Guide to Gorgeousness
A Hair-brained Scheme
A Laughable Goal
A Moment of Silence
A New Order
A Novel Find
A Poet’s Life for Me
A Prisoner’s Promise
A Radical View
A Siren Scam
A Siren’s Silence
A Timekeeper’s Life for Me
A Warrior’s Due
A Warrior’s Wage
About the Doubt
An Auger’s Life
An Eridium Brief
Away Message
Before the Lockdown
Book Smarts
Bottom’s Up
Captain Quent
Captain Suckattack Sucks
Carcadia’s Birth
Casting Call
Claptrap Memories
Congrats, Noob
Death!
Dream Log
Elpis Real Estate
Eridium Chasers
False Start
Fashionista
Fear and Self-Loathing
Fit to Lead
GenIVIV vs. Zane
Get Pranked
Ground Beef
Handful of Trouble
Happy Helper
Hear My Call
Hear Ye, Hear Ye
Hello, World
Hit Your Business
Hostage Negotiation
Human Nature
I Love You THIS Much
I’m Going into Auger Mode
Join the Crimson Resistance!
Leaky Starships
Lee from the Band
Lev at First Sight
Lictor’s Grasp
Life Hack
Local Celebrity
Missing In Action
Missing Persons
No Escapes Means No Escapes
No Touchy
Opening Night
Parting Gifts
Pet Sitter
Phone Home
Pick a Clave
P*ss and Vinegar
Poor Kitty?
Pour One Out
Propaganda Rehearsals
Rafa Lives
Rafa the Negotiator
Rafa’s Beauty Blog
Rafa’s Rebirth
Ready, Fire, Aim
Regifting
Safe and Sound
Safe Cracker
She’s A Goth Girl
Slumdog Beth
Status Report
Sticks and Stones
Sticky Fingers
Stop Resisting
Test Subject
The Coalition
The Diary of an Order Peon
The Legend of Carcadia
The Love Story of Joe and Sue
The Path Forward
The Tastes of War
The Timekeeper’s Gift
Therapy Session
Thresher Overboard
Tiger Queen
Till Death Do Us Part
Tiny Dancer
Toilet Joke
Tore the Gods Asunder
Track and Field
Uninvited Guest
Vex’s Biggest Fan
Virgin Breath
Welcome to the Conclave
What’s in a Name?
When in Need
Who Watches the Timekeeper?
World’s Greatest Overlord
You’re Mine
Zadra’s Domain
All Mission ECHO Logs Alphabetical
Only 25 of the 45 Mission ECHO Logs are necessary to complete the “Kairos Speaks” Challenge. I’ve only listed the Mission ECHO Logs that count as collectible in this list.
A Marker’s Mark
DO NOT LISTEN! Solution 1
DO NOT LISTEN! Solution 2
DO NOT LISTEN! Solution 3
DO NOT LISTEN! Solution 4
Eridium Warning!
Half Glass Gang Password
Her Confrontation
Her Descent Begins
Her Revenge
Her Sorrows Revealed
Her Tragedy
How to Hack
Kilo’s Instructions
Lunch is Mine!
New Runner
Old Wounds
PF94_Observation Log-EX1710
PF94_Self-Observation Record 4
PF94_Self-Observation Record 7
PF94_Self-Observation Record 124
Ripper Papa
Subject Number 1015
Subject Number 1418
The Exo-Rift Works!
Browse All Borderlands 4 Guides
Borderlands 4: The Howl Collectibles & Activities
Discover every collectible and activity in Borderlands 4's The Howl. Follow this guide to complete s…
Borderlands 4: The Low Leys Collectibles & Activities
Master Borderlands 4's Low Leys region with this guide. Find every collectible, complete activities,…
Borderlands 4: Tonnage Peel Collectibles & Activities
Master Tonnage Peel in Borderlands 4. This guide covers all collectibles, activities, and tips for 1…
Borderlands 4: Umbral Foundry Collectibles Locations
If you’re diving into Borderlands 4 and aiming to snag every collectible in the Umbral Foundry…
Borderlands 4: Windspear Collectibles & Activities
Master Windspear in Borderlands 4 with this guide. Discover every collectible, tackle activities, an…
Cache To Spend: All Survivalist Caches in Borderlands 4
Locate all Survivalist Caches in Borderlands 4's Fadefields region with detailed maps and tips to co…
Borderlands 4
Release: September 12, 2025
Developer: Gearbox Software
Publisher: 2K Games
Official Website: https://borderlands.2k.com/borderlands-4/
