Helldivers 2 grunts are convinced they've found even more evidence of an upcoming Halo collaboration, as a mysterious "unknown signal" sounds very familiar when played in reverse.
Yesterday, Helldivers fans went feral when a new trailer promoting the game's upcoming Xbox Series X|S release featured a small snippet of the Halo 3: ODST soundtrack. That was already compelling evidence suggesting a collaboration could be on the way to celebrate the launch on a new platform, but the teasers don't stop there.
