Army of Two: The 40th Day and Army of Two: The Devil’s Cartel were both delisted back in October of 2021. Removed from sale digitally, the games have remained available on physical media and playable for those who previously purchased them. However, Electronic Arts just recently updated their Online Services page announcing that multiplayer and online features for both games will be terminated on October 20th of this year.
The change will impact several Achievements/Trophies in The 40th Day and, at the least, will make progression slower in The Devil’s Cartel after the deadline. Thanks to Wakayama_PT for pointing out the news, I’ve added the date to the Watch List calendar.