Very well done, got all three medals. Very fun quickie game for Halloween
*Spoilers*
Pure - Head out of your room and go right. Keep going right through the main room into a room with a large cabinet. Open the cabinet and take the bear trap on the bottom left room in the main area. Use it to kill the rat and take the axe. Go right until you enter the bathroom and approach the toilet. Kill the creature in the toilet with the axe. Go back to the hallway and break down the boards with the axe. Drop the axe and talk to your sister inside. Follow her until you win.
Pure evil - Follow pure route until you get the axe. Kill the doll, the cat, the creature in the toilet, and your sister *before talking to her*. Father will come home and be.. proud.
Murderer - Must be fast for this one. Follow pure route up to axe. Drop axe in hallway on left side. Get the cat and give it to the doll. Put the gun near the axe. Get the bear trap from the area with the area where you killed the rat. Place bear trap between the door and where you stored your weapons in the hallway. When father gets home shoot him, allow him to walk into the bear trap, then axe the hopping head. Enjoy!