And here is the full list from the AHC end credits.
Karen Hayman as Gwen Adrianus
Nate Wales as Simeon and Rogarr Rabgurg
Ariane Vai as Sister Alexia
Christian Gaughf as Matthias
Matthew Wade as Lord Adrianus, Father Ignatius, and Samuel
Kevin Powe as Captain Lucian and Liam the Avenger
Chad William Fischer as Festus, Wilhelm, Crazed Beggar and Goblin
Dominic James as Professor Vincent Lindarro, Grebbik bra-Nolag, Merchant, and Additional Voices
Melissa Sternenberg as Hope the Vampire Slayer and Sally the Guard
Rayyah McCaul as Susan, Freida, Lady Petunia, and Additional Voices
Jonathan Cook as Alastaire Ulcano and Walter the Guard
Edwyn Tiong as Jerome the Armorer
Jenny Dean as Annabelle and Victoria Linarrio
Glen Michael Cooper as City Guard, Bernard the Outlaw, and Additional Voices
Erin Lillis as Madeline and Calamity Janet
Kimlinh Tran as Beatrice
Alex Brodie as Jonathan the Hunter and Additional Voices
Gary Scales as Marcus the Mercenary and Additional Voices
J.P. Corwyn as Alan the Minstrel, Big John, and Additional Voices
Clement Chou as Billy the Beggar
Thomas Procter as Nigel, Stefan, Bandit Chief, and Additional Voices
Jonathan Burian as Titus Adrianus
Sean West as the Goblin King and Additional Voices
Male Player Vocals by Nile Zam Jones
Female Player Vocals by Felicia Valenti