His artistic approach focused on clarity and historical accuracy. He avoided the heavy shadows used by the Caravaggisti, preferring a lighter tonality. His figures are sturdy and well-defined, showing the influence of classical sculpture. Van Thulden often worked on large commissions for public buildings, where he combined mythological stories with local political messages. His ability to manage complex groups of figures made him a preferred choice for civic decorations.

Modern collectors appreciate the balance in his work. His compositions are structured and easy to read. These compositions provide a sense of seventeenth-century grandeur while remaining visually accessible. Because he was a skilled engraver, his prints maintain a high level of detail that works well in contemporary domestic settings. His work offers a more restrained alternative to the often overwhelming energy of other Baroque masters.