Gold Kryptonite ends up playing a critical role in Suicide Squad: Kill the Justice League, but it's not a concept that will be immediately familiar to everyone playing the game. True to its name, Suicide Squad: Kill the Justice League follows Task Force X on their mission to take down the typical heroes of DC stories, who have been brainwashed by the supervillain Brainiac. Of course, this isn't an easy task for a band of dysfunctional miscreants to accomplish, especially when it comes to taking down the nearly invulnerable Man of Steel himself.
https://screenrant.com/suicide-squad-kill-justice-league-gold-kryptonite-superman/