For the first time ever, a Halo game is available on PlayStation with Halo: Campaign Evolved. The game is having a “notably slow start” on Sony’s console in terms of sales, however, according to gaming analyst Rhys Elliott. He estimated that Campaign Evolved sold 351,000 copies on PS5 during July and 452,000 to date, generating nearly $28 million. By comparison, Elliott said Campaign Evolved has shifted 212,000 units on Steam and about 900,000 on Xbox across console and PC thus…