Suicide Squad: Kill the Justice League features several shocking moments throughout its story. The game sees Task Force X, a rag-tag team of supervillains, sent by Amanda Waller to defeat an alien invasion led by Brainiac. Unfortunately, while Brainiac has assumed control of 99% of the city of Metropolis' population, he has also brainwashed most of its heroes, the Justice League, resulting in Waller issuing a kill order on some of the most powerful beings in the DC Universe.
https://screenrant.com/suicide-squad-kill-justice-league-spoilers-brainiac-multiverse/