This is story related and cannot be missed. It is unlocked towards the end of Chapter 01: Prologue. The Prologue consists of two main parts. The first part is much longer than the second part and consists of a combat sequence. The second part is non-combat and consists of the first main story mission, Reboot. Concluding the first part of the Prologue unlocks the achievement just before the second part begins.
You cannot save until you defeat the main boss of the first part of the prologue. It is an action-filled sequence that some might find challenging especially if they have selected one of the harder difficulties. A summary guide is provide in the spoiler section. I added this section in response of a comment JernauGurgeh SF
. made in the review of a game. He pointed out some players might find being thrown right into the action a little disconcerting and advises "to (1) use dodge constantly as it makes you invulnerable; and (2) keep your finger on RB at all times to fire a stream of bullets at everything and anything:"