4 0 1Actions Report Solution If you buy the infinite ammo tweak then you have infinite grenades. Once you buy this boot up the game at any point with enemies on very easy and find a ledge to hang off of. Then just throw grenades like a madman and eventually you will get this.Showing only comment. ended up getting this in chapter 4 the digPosted by DeathofRats09 on 27 May 16 at 22:50