Invisible Soldier achievement in Metro Redux

How to unlock the Invisible Soldier achievement in Metro Redux: Complete the REVOLUTION level without killing and raising an alarm

Steam Community :: Guide :: 100% Achievement Guide

AStats - Metro: Last Light Redux - Game Info

Metro 2033 Redux - release date, videos, screenshots, reviews on RAWG

Duke Nukem Forever - PC : Video Games

Achievements - Metro 2033 Guide - IGN

Guide for Metro Redux - Metro Last Light levels 6 - 10

More games, specifically FPS, need a difficulty mode like this one [Metro 2033] : r/gaming

Invisible Soldier, Metro Wiki

Metro 2033 Achievements

Metro 2033 Diaries Part Eleven