Pelase correct me if i'm wrong ppl.
Lets say that when your run the game, the engine will get some info from files that have a ".dll" extension. So the "hack" part is to create a diferent version of the .dll file with "New Infos related to the hack goal". So you use the Injector to "inject" the New .Dll into the process (So when you run AVA.exe he will try to access the new modified .dll file that contais "the hack".)
So the steps would be:
1- Open injector
2- Load the .dll file you want to inject
3- Type the name of the game process ( AVA.exe or ava.exe )
4- And inject it after game loads (just use auto-inject and close after inject) will make things easier.
Hope i helped you.