Deus Ex: Mankind Divided Trophy/Achievement Guide - The Invincible Body, Fighting An Iron Devil.
This achievement can easily be obtained in the underground club in Palisade. Go through the alley and climb down the manhole and hack the gate. Now with a fully upgraded TITAN augment run through the room and up the stairs into the security room and wait until you see a grenade get thrown into the room. Once you see it quickly run over to it and activate the TITAN augment and the trophy/achievement will unlock.
I have added a video guide below,