Complete the indicated task to unlock the achievement.

Achievement	How to unlock
3-2-1-GO-1-6-7-8	Complete "3-2-1-GO-1-6-7-8" relic challenge.
A Quiet Place	Complete "A Quiet Place" relic challenge.
Caged out	Collect the 1st Memento.
Freedom	Collect the 4th Memento.
I Come in Peace	Complete "I Come in Peace" relic challenge.
I'd Like To Have That In Writing	Complete "I'd Like To Have That In Writing" relic challenge.
If It Is Broken, Don't Fix	Complete "If It Is Broken, Don't Fix" relic challenge.
It'd Be Too Damned Easy	Complete "It'd Be Too Damned Easy" relic challenge.
No Last Eternity	Complete the story of Timelie.
Omen	Complete "Omen" relic challenge.
Operation Skuld	Complete "Operation Skuld" relic challenge.
Retcon	Complete "Retcon" relic challenge.
Reunion	Collect the 3rd Memento.
Silver Lining	Collect the 2nd Memento.
Splinter Cat	Complete "Splinter Cat" relic challenge.
The Beginning	Obtained all Timelie achievements.
The Most of Us	Complete "The Most of Us" relic challenge.
This Is Cat. Can You Hear Me?	Complete "This Is Cat. Can You Hear Me?" relic challenge.
Time Waits For No One	Complete "Time Waits For No One" relic challenge.
Timelie	Watch the secret ending.
Urnique	Complete "Urnique" relic challenge.
Well Planned!	Complete "Well Planned!" relic challenge.