resign/ rehash to your id and play game then choose load save name: M17 Base Cells 05:52. After that load go forward and down the stairs, through the door then there will be no alarm tripped on screen, after that pause, reload the save again and follow the previous step... Repeat 10 times until it pop... this might have to be done ten times or less depends on you own play-through, because the achievement progress is stored on the profile. Download mega. https://mega.co.nz/#!8MZWWIzQ!TKduI3y7oy5cLCk9YlGXLhQSm_dTCsp5Eq98HGLhWGQ
sure. pls upload your save here. i mod it for you... there is around 9 save in the directory. pick 1 of you latest save and upload it...