4 0 1Actions Report Solution You will earn this from completing the prologue mission. It is where the story begins and is very linear, so it can't be missed. The achievement will unlock when *** Spoiler - click to reveal ***Shepard is spaced and debris pierces his armor causing all the oxygen in it to bleed into space, killing him. Showing only comment. Leave a comment. After you watch a cutscene after the demise of Shepard, the achievement will popPosted by IceeLady on 12 Mar 22 at 20:51 Leave a comment