Your actions as Caddoc or E'lara affect how the game will end. As the story unravels, you find out that your enemies have tapped into a corrupting and powerful magical liquid called "Sleg." You can drink Sleg at various points during the adventure, transforming into a nearly invulnerable combat dynamo, but it will negatively affect the game's ending. Even one sip by either player has dire consequences, so be warned! If you want to remain pure and keep the bond of friendship strong between Caddoc and E'lara, take the more challenging road and survive the world's darkest perils using only your natural skills.