The phrase "unorthodox methods" refers to unconventional or unusual ways of doing things that are different from what is typically considered normal or traditional. Full definition
as long as you're not opposed to using a slightly more unorthodox method of acquiring points. (travelingformiles.com)
The word «maverick» implies someone who uses unorthodox methods for honourable ends, but the film can't make up its mind what that actually means. (independent.co.uk)
Winter Sunburst reveals Burchfield's unorthodox methods for painting in watercolor. (dcmooregallery.com)