Doctor

The doctor is an unlockable character with high resistance against poison. The class starts with a Claw, Toxic Slime spell, Scented Mask memento, a Blood Slime companion, and 8 surges. The class is unlocked by the I Survived The Plague achievement where the player loses a certain amount of maximum HP from poison health reduction. This is best done by using a character with low Fortitude and traveling to the Swamp area.