More often than not when I read these type of stories instead of enjoying bit for what it is, I come to dislike it for what it isn't. It could have been so much better!
The start, those first few pages when we are told that or protagonist and the country will suffer a bad end because of the game scenario, it suggest a story more gritty than what get, far removed from the usual such fake character powerbuilding.
But instead we are shown that the protagonist liked the villainess... Because of course he did.
I hate that crappy "virtuous villainess" trope.
How many such vilainesses have you actually come across in these supposedly real games/novels? Everyone I've seen the vilainness are rotten to the core. Sure, I hate them getting punished, but that is regardless of whether they are evil or not.
But these crappy villainess stories just flip the script. They do the same to the "heroine" that they claim are done to the villainess. Because the heroine in these stories ARE the vilainness... so how is this good?
In this story while not seeing the people as real, Amy isn't exactly wrong either. What the protagonist is doing is just as selfish as what she is doing. He is screwing her over for his own happiness. Sure some people would die, but in the end the victory of the kingdom was assured in these scenarios.
But the protagonist wants to avoid these scenarios, knowing fully well that this itself won't actually stop the enemy empire.
So he is gambling with everyones lives to save the ones he likes.
Forget about Amy not being the real Amy... If he and the fake Amy had not been there, Amy would have found those things. Think about it this way... You invent something that makes you rich and famous. Someone sees this and goes back into the past and then invents what you created before you can do it.
This is basically what the trash protag here is doing. The only difference here is that the author is the protagonists cheerleader and goes out of his way to vilify Amy's actions even though they aren't necessarily wrong.