https://www.gamespot.com/articles/monster-hunter-worlds-street-fighter-5-event-begin/1100-6456813/

Before the second part of Monster Hunter World's Horizon: Zero Dawn crossover event begins later this month, some PS4 players will have a chance to get a different set of crossover armor for their hunter. Beginning at 4 PM PT / 7 PM ET today, February 15 (12 AM GMT on February 16), PS4 players who have save data for Street Fighter V on their consoles will be able to accept the first Street Fighter V Event Quest.

The quest is called Down the Dark, Muddy Path, and it's a three-star mission that requires a Hunter Rank of 3 or higher. The objective of the quest is very straightforward: slay a Barroth. Complete the mission and you'll be rewarded with items to craft the Ryu armor set, which will turn your hunter into the iconic Street Fighter character when equipped. You can take a look at the Ryu armor below.