Well you can't imagine a game like amnesia.
Here are some details :
- You cannot defend yourself, your only way of survival is running or hiding.
- You're afraid of the dark, if you're in the dark too much, your sanity drops and makes you hallucinate baaad shit.
- Light is bad, it makes you easy to spot, dark is bad, it drops your sanity.
- Every couple of minutes (literally), bad events happen (someone screams and your player automatically turns around, door opens and every light turns off, slime starts to grow everywhere...).
- When you're spotted, all you can say is "HOLY MOTHER OF...." before you find yourself being chased by a horrendous monster.
- When you walk and they walk, you are faster, when you run and they run, they are faster, so hide in the dark or die.
Remember to play in the dark, concentrate on the the game and turn off all the lights around you.