The current status of the campaign is stored in the Game.prefs file.
It is located in $USERPROFILE\AppData\Local\Gas Powered Games\Supreme Commander 2\
Before doing this, make a copy of that Game.prefs file and save it somewhere. Just in case you screw it up, you can replace the screw up with the old copy.
If have played any of the campaign missions and either completed one or failed at it, not if you quit playing it, your Game.prefs file will have a 'campaign = { }' section in the profiles block. Just search for it.
It'll likely look like:
campaign = {
UEF = {
SC2_CA_U01 = {...
}
}
}
To complete all of the UEF campaign missions:
- Just copy the entire SC2_CA_U01={ } block.
- Then paste it right after that }, putting a comma between them.
- Remove the
completedObjectives list from that copied block, but leave that completedObjectives block itself there.
- Change the SC2_CA_U01 to SC2_CA_U02. (or a number from 1 to 6)
- Repeat for each of the 6 UEF missions.
To complete all of the Illuminate missions (starting with a completed UEF missions block):
- Find the end of the
UEF={ block.
- Put a comma after it.
- Paste a copy of the entire UEF block after the comma.
- Change
UEF to Illuminate.
- Change all
SC2_CA_U0x to SC2_CA_I0x where x is the mission number.
- Make sure all
completedObjectives lists are empty.
I haven't tried to do the Cybran missions yet, but I suspect following the Illuminate instructions but replacing SC2_CA_I0x with SC2_CA_C0x and replacing Illuminate with Cybran might work. To know for sure, just play the first Cybran mission. Once you complete it, the Game.prefs file will contain the keys you need.
You can do this in baby steps. After making a small change, reload the game and see if the campaign menu allows you to select newer missions. If it didn't work, either the game will make a copy of the Game.prefs file and name it Game.prefs.bad and make a new blank one or it will just ignore the change.
Best Answer
I agree with RCIX's point about the radar, and possibly some aircraft/tanks on patrol for spotting.
However, I find that this is often like a "queen swap" in chess; in the early game you can usually only defend against it by sacrificing your own ACU. Although, if your ACU has enough research on it it may well survive taking out their ACU before it gets to your base.