Haydee is a cybernetically modified/manufactured human female, controlled by the Player, that works her way through the game by solving puzzles, exploring the environment and defending against any hostile enemies in her way. Haydee has several options available to her as to how exactly she accomplishes these, including deduction/brute force against puzzles, calculated/blind exploration or evasion/destruction of enemies. However, Haydee may be forced to use any of these methods depending on the circumstances; whether it be a puzzle that results in death