To get the Deep Cut badges in Splatoon 3, you need to participate in the special "10x battles" during Splatfests. Here is how it works:
- Simply taking part in 10x battles during a Deep Cut anniversary Splatfest will unlock the regular Deep Cut badges for all three members (Shiver, Frye, and Big Man) simultaneously, regardless of which team you join
- To unlock the gold versions of these Deep Cut badges, you must win 10 of these 10x battles. Your progress in winning these battles is cumulative across multiple Splatfests, so you do not have to win all 10 in a single event
- Note that only 10x battles played from the current or future Splatfests count toward these badges; previous 10x battles before this system was introduced do not count
- During the Deep Cut anniversary Splatfest, 10x battles are more frequent, providing a good opportunity to work toward these badges
In summary, to get Deep Cut badges in Splatoon 3:
- Participate in 10x battles during Splatfests to unlock the regular badges.
- Win 10 10x battles cumulatively across Splatfests to unlock the gold Deep Cut badges.
- Your progress carries over between Splatfests, so take your time to achieve these goals