This is an unmissable trophy, as it is part of the story. These are the steps required, for those who are wondering (minor spoilers):
After climbing the fence and going inside the house, search the kitchen drawers for a walkie-talkie. After (during?) your conversation, you will be attacked. Fend off your attacker with some well placed kicks and grab the hammer when you are able to. Finish off your assailant and collect your trophy shortly after!
Here's a video, for those who are interested (thanks to 4K Gaming).