Helldivers 2 Not Coming to Game Pass
Helldivers 2's Xbox version has been announced, but if you are waiting for it to be added to the Game Pass library, we have bad news for you.

The Xbox Series X|S version of Helldivers 2 has been announced, raising a whole new set of questions for many people. One of the most curious issues is whether Helldivers 2 will come to Game Pass. Arrowhead Game Studios has given a clear answer on this issue: No, Helldivers 2 will not be coming to Game Pass.
The game made its debut in 2024, exclusively for PlayStation 5 and PC. Recently, the developer studio announced that the game will be coming to the Xbox Series X|S platform after this special period of over 1 year. After this announcement, expectations naturally arose for Game Pass.
However, Arrowhead's community manager Baskinator said on the game's official Discord server that Helldivers 2 "definitely won't be coming to Game Pass" and that they have "no plans" to do so.
Helldivers 2 Xbox Edition

Source:
https://insider-gaming.com/helldivers-2-devs-have-no-plans-of-putting-it-on-game-pass/