This can be easily gotten in Chapter 2 Remmnants. A short while into the Chapter you'll come across a cutscene where 2 normal guys morph into monsters. Once the cutscene ends switch off your lamp if you have it on and hold down
then hide behind the hay and wait for the enemy to come out into the road, after a while he'll walk away so begin following him once you get close enough he'll turn so hold down
and then hit
to throw the bottle at him (apparently it must strike he's head) he will then stumble so hold down
and go around him till you see the option to hit
and press it.
If you fail you can reload the checkpoint (autosave)
Here's a video explaining how to get the Achievement.