Walkthroughs for custom maps.

After reading the hint:
You don't need to kill Balrog. Just let him go to the nearest town. He will fall into the abyss himself. Free Galadriel. She has the Clone spell.

and also the events:
Balrog! A demon of the ancient world! A spirit of fire swathed in dark shadows!

Stop! The Demon is invincible!

The only way to defeat the monster: with intelligence!

Gandalf: I am a servant of the Secret Fire, wielder of the flame of Anor.
The dark fire will not avail you, flame of Udun!

Follow Balrog and go to hell!!!

I didn't attack Balrog (since he had a lot of troops, 5000 Phoenixes and about as many Archdevils or just Devils), but instead, I jumped into his city, "Balrog Dungeon," and spent the night there. Balrog disappeared. I would have beaten him, but I don't have the Vulnerability Sphere yet to blind the Phoenixes, and I don't have Clone. Then another event.

Gandalf: Go back to the Shadow! You shall not pass!
I'm wondering why he disappeared in just one day without a city.

I'm attaching the save file. https://yadi.sk/d/5XOwV8tv3K6W8x

I would appreciate a translation; thank you in advance for the translation.

I beat Witch King 2; the battle wasn't difficult. I calculated the number of archers so that a few Liches would remain, so they wouldn't shoot too hard. Then, after killing the flying and foot units and resurrecting my own, I killed the remaining Liches. I freed Galadriel and got Clone or Phantom, which is very useful when there are many Archangels :)

Another hint: Free Trebeard. Send him to fight in the first wave with Saruman. If he fails, finish Saruman yourself.
Translated: Free Trebeard, send him to fight in the first wave with Saruman. If he dies, Saruman will kill himself.
Question: Did I translate correctly?