Use the left arrow key to move left and the right arrow key to move right. To shoot, press the space bar.
Sometimes, there is flashing colors, and when you shoot, some costumes change VERY quickly. It's not intended, but it happens. When you get to the riddle part, write your answer in ALL LOWERCASE LETTERS. It will not work if your answer contains any uppercase letters. -You should really try clicking on some portraits some time. Preferably when you can see the whole portrait.