An unknown force has pulled you to the Citadel's location and beckons you to enter. Unique traps and puzzles await you on every floor with a variety of obstacles intent on stopping you. While inside, you'll discover entities which will try to help you and others attempting to prevent your escape. Upon entering you'll find a plasma cannon that will give you access to puzzles and the means to defend yourself. It will pack a punch but you should choose your shots carefully, especially when a looming presence confronts you.