Posted on 15 June 16 at 18:56This game has 65 achievements. However, only 40 of them are part of the base game. The other 25 are spread among 5 different DLCs (5 achievements each): Doctor Strange, Masters of Evil, Black Panther, Captain Marvel, and Agents of SHIELD.
Posted on 16 June 16 at 04:54Not a bug, steam has them all listed as one thing so that's how the scanners put them into the site. But I've fixed it now, thanks for reporting