I thought it said "A brony" on the title screen at first. I was a bit disappointed at how the graphics weren't that good, but I managed to get pretty far with this. Here's how far I got. Go over to the part of the cabin that has the "5" and "52" on the walls and pick up the Morse Code Chart on the floor. Go the part of the walls with the illustrations or whatever and pick up the three repeaters on the wall. On the safe, the correct combination is to have the black bush on top and then the moon and then the star and then the moon on top.
There's also a battery on the floor that you can pick up. Under the TV screen, there's a fourth repeater you can pick up. On the poster, use the morse code to decipher out "SOS". I think you're then supposed to connect the two green things on the side together, but that didn't do me much good. I like how you create a good creepy atmosphere.