Age of Mythology: Retold

Start a skirmish with one AI on lowest difficulty. Set ressources to infinite. Choose Zeus. If you are comfortable with it, increase the games speed.
At the start auto-queue villagers and build a temple, go to the next age with Athena. While that is happening, scout towncenters and build houses.
Once you reach the second age, built a forge, start researching everything here, advance to the next age, start building additional towncenters and about 5-10 barracks, auto-queue Hoplites, upgrade everything for them in there.
Once you got that done, built a fortress, advance to the fourth age.
Once you have about 60 Hoplites, attack march them into the enemy. You shouldn't need to do anything at that point.

The AI never attacked during all of that.

This is an easy achievement.

Start a skirmish with the Greek using Zeus
Settings:

• Standard Mode
• Game Speed Fast
• Infinite resources
• Reveal all
• 1v1

Start:

1. You can also gain 3 more achievements during the same game, please follow my video guide below for more info.
2. Begin by building the temple and then upgrade to age 2 and be sure to choose Athena, to prevent getting a ranged troop.
3. Build all houses to allow for max troops/units.
4. Build a armory and upgrade to age 3, be sure to choose Dionysus to stay safe with Hydras.
5. Build more temples to produce Hydras at a faster rate if needed and use upgrades in the armory and temple for a little more strength.
6. Attack enemy base with Hydras to win and gain this achievement, and if done correctly you will also gain the other 3 achievements.

If you need more help with this you can follow my video guide below which will begin at this achievement: