WC3SC1T04 Why 3 Difficulties
Taking a break from Alliance 03 for something more fun, which is Alliance 04 the Alonsus (Jacobs) Installation.
As for the difficulties:
Easy = same as the original SC game
Normal = mildly tweaked, added some custom content.
Hard = reimagined, added lot of new stuff
In this case... if you're wondering, it's gonna have a lot of Predator references.