To get the skin for free in Fortnite's "Save the World" mode, you must play Battle Breakers and reach level 20 within the game.
Battle Breakers is the new free-to-play Epic Games RPG, released by surprise on November 14.
As part of a crossover with this game it is possible to get the skin of Razor in the “Save the World” campaign of Fortnite.
To achieve this, it is necessary to reach level 20 of the Battle Breakers game and have acquired the “Save the World” campaign in Fortnite, of course, since it will only be available in this mode.
Both accounts of the games must be linked, that is, it is necessary to be enrolled in the game Battle Brakers with the same Epic account used for Fortnite.
It is not officially known, but it is likely that the union between these games will soon reach the Battle Royale.