The Horus Heresy: Battle of Tallarn has never been released for PC, so it has no PC system requirements. It came out on iOS. Released in 2017.
There is no emulator for iOS that this site will point you at.
Platforms: iOS.
System requirements for the game Company of Heroes 2
System requirements for the game Sid Meier's Civilization V
System requirements for the game ARK: Survival Of The Fittest
System requirements for the game Cities: Skylines
System requirements for the game XCOM: Enemy Unknown
System requirements for the game Brutal Legend
System requirements for the game Crusader Kings II
System requirements for the game XCOM 2
