Armageddon's Blade couldn't destroy the world. In The Restoration of Erathia, the war was for one kingdom. Sandro, in The Shadow of Death, found artifacts at the very beginning of the game and then tried to become the ruler of the continent through intrigues and armies. Again, just one continent.
Yes, you are right, I wasn't entirely accurate, but such minor deviations from the standard plots don't make the game's plot original, and your post, frankly, doesn't seem very convincing.
Sincerely.
So you fall at his feet hes the one who betrays you
Its the servants devotion for the decay
Stand up
There are no flowers on your grave
There are no chains
There I keep chanting for the forgotten name © Amorphis