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This is the most correct way to play, but in reality, it's not always possible to complete it, and then you have to choose variations. You play, you play, and then you suddenly find a mistake. You load the save from the day before yesterday again and go back into battle... and so on, in a loop.
Yes, I've already noted this for the future ;), I'll check it in the 8th stage :)
"Единственное, что можно сказать с уверенностью об удаче - она изменит..."