Hedge Pupil can be seen losing the keys of the house in the ending of King of Cards while blowing up the Crag of Joustus. By pulling a lever next to her desk, the two are taken to the underground lair that is the Potionarium via hidden Torque Lifts. The path leads to Mona's room, the backroom of the Juice Bar, where it is revealed she works with Plague Knight. By blowing up the barrels (and consequently Hedge Pupil's house), Plague Knight can enter the secret passage below the Village, through the sewers. To enter the Potionarium, Plague Knight must go left, where Hedge Pupil will be, saying that the secret entrance to the Potionarium is blocked by barrels at his own house. Should he nevertheless try to enter the Village, Farrels will stop Plague Knight and rudely kick him out. Upon entering the Village for the first time (forced after completing the Plains level), the guard Farrels stops Plague Knight, saying he and his Alchemy are not welcome in the Village. Each time Plague Knight defeats a member of The Order of No Quarter, he is automatically taken to the Potionarium where he hands the essences collected to brew the Ultimate Potion.Īfter taking over Armor Outpost and unlocking Shortcut?, Plague Knight can visit the Village again from Shortcut?, but still cannot go into the Village proper. Once Plague Knight has visited the Potionarium, entering the Village from the map screen will bring him directly to the Potionarium meaning he cannot access the Village. To access the Potionarium Plague Knight must take the hidden route to Mona's room. It is a hidden facility beneath the Village which Team Plague use as their base of operations to study Alchemy secretly and to develop the Ultimate Potion. The Potionarium is a location featured prominently in the campaign Plague of Shadows.