The 8th stage of the annual John Van Caneghem Tournament (2007).

I know that this is a code for the fourth game. But I meant the fact that in the fourth game, you can enter a code in a battle that is guaranteed to be won (don't tell me you didn't have such thoughts during the 4th stage, even though they were successfully suppressed by heroic considerations)...

Nothing was suppressed. The conclusion remains the same: no one knows or can know how the player completed battles that were guaranteed to be won but long in the fourth game – manually, with a code, ArtMoney, or as a hacker. And why does anyone need to find this out if, according to the description, the battle is won, and you don't get any illegal advantages from this battle in the game itself.

but in the third game, everything is done manually or with a ballista killer, but it takes time or occupies the computer.

And who can prevent a player from replacing the ballista killer with ArtMoney and saying that he completed the battle with a ballista killer? Personally, I don't see any difference between the killer and ArtMoney if it is used in a battle that is guaranteed to be won. Only, as you rightly say, nwcAres and ArtMoney are better – cheap and cheerful. That's usually what they say :)
PS. By the way, according to the description, you had several battles with a ballista killer. Approximately how many hours did the battles last, even with a ballista killer?