Here is the full list of all 13 Don't let Him In trophies - there are 1 silver, 11 gold and 1 platinum.
All trophies
Arriving at the cafeteria.
Arrive at the hotel
Arrive at the gas station
Arrives at the warehouse
Arrive at the blue house
Arrives at the video club
Take the flashlight
Pick up the hitchhiker
Take the baseball bat
Collects 10 medicines
Take the Shotgun
Finish the game