Hot Key Assignment?

[76mm]

How did you come up with the shortcuts in the .ahk?
Can I use the ALT-key as well?

I'm thinking about changing the file to mirror the hotkeys of the PanzerBattles series to not get confused when switching games.

You can insert whatever hotkeys you want if they are not already used in the game.  You can probably do that as well with autohotkeys although you will need to figure out how.  

To use the Alt key AFAIK you just need to replace the ^ with ! (although I've never actually tried this, I use the Ctrl key).