Location: Chapter 2 The perfect opportunity to get this is in chapter 2. After fighting through a building, a short cutscene will begin to play and after that you are walking through a damaged corridor. At the end of the corridor you will see an enemy running down a little hill. Do not shoot this enemy! Take cover in the corridor and you will see how the enemy pulls out a grenade. Shoot him immediately. This is a scripted event and the enemy will always try to throw a grenade! Reload the last checkpoint in case you need to try it again.