https://www.gamespot.com/articles/street-fighter-5s-first-monster-hunter-world-costu/1100-6456907/

On top of the Street Fighter gear you can craft in Monster Hunter World, Capcom is offering a set of Monster Hunter-inspired costumes for Street Fighter V. Three outfits based on some of the series' most iconic monsters are coming to Capcom's fighting game soon, although getting your hands on them will require a bit of effort and a lot of Fight Money.

Unlike previous DLC outfits in Street Fighter V, players can only acquire the Monster Hunter crossover costumes by completing a specific set of challenges in Extra Battle Mode. These challenges will be held each week over the span of a month, and only by completing all four will you earn that costume. You'll also need to spend 2,500 Fight Money each time you attempt one of these challenges, so each outfit will run you at least 10,000 FM, assuming you can clear every challenge on your first try.