Try to make it not too confusing yet not too easy. Not too many heart attack moments but nothing unexpected. Make sure stephano is always there to be picked up. Make it a creepy atmosphere at times where the game is dangerous. Have sounds about every 3-5 minutes to creep people out. Once you've done all this make sure it has been tested fully. A good story line tends to have a plot twist somewhere late in the map, maybe the player realizes he has to sacrifice something (a person etc.), the playe…