Age of Mythology: Retold

You can do this in about five minutes. Start a skirmish with two AIs on the lowest difficulty. Choose either Set. Set ressources to infinite and if you are comfortable with it, increase the speed of the game.
At the start built a couple of temples and as many houses as you can. After the first temple is finished, age up choosing Anubis. While that is happening, recruit a few priests. Sent those around the map and convert animals.
After reaching the second age, auto-queue Anubites in all the temples. Once you reached max, attack move the Anubites into an AIs settlement. After taking care of the few units they will have, destroy there towncenter and any attack buildings they have, making sure you leave 2000 points of health on any remaining buildings. Once this AI is beaten, take your Anubites out of the settlement and move in with your converted animals. Let them destroy the buildings and you are done.

The AI will not attack your base, so you don't need to worry.

This can be more easily done on Campaign Mission 13: Tug of War on Story mode Difficulty.

At the start of the mission instantly cast your serpent and summon minion powers so that you can get instant control of the Osiris piece whilst also tasking your whole army to that area. Task your pharaoh to go back to base however. Task your Osiris piece to get close to your base albeit not beyond the stone walls as this will end the mission (I usually just have the piece by the narrow canyon just before the base).

You should have the means to age up to the Mythic Age, do that as soon as you can. As soon as you age up have your pharaoh be at the narrow canyon close to your base and start summoning Set Elephants. The two reasons why this is better done in this mission is because, as your base is already established and all God Statues have been pre-built, you have more than enough favour to spam Set Elephants with no concern. The reason this mission should be done on Story Difficulty (apart for the obvious) is that on harder difficulties the enemy springs an ambush right at the narrow canyon way close to your base which does not happen on Story Difficulty.

Have all your surviving, non Set animal units return to base. Have your pharaoh, who should now be at that canyon way, spam summon Set elephants. Wait until there is a group of around 5-10 or so summoned and have them tasked to attack move to the enemy's base. They will automatically use the side-entrances to the snake-bend canyons that the enemy army uses to manoeuvre through the map and will automatically attack them. The Set Elephants have a lot more bulk and dish out decent damage but other animals can do as well. Took me no more than 5 minutes. A lot less time than having to establish your base in Skirmish and wait for enough enemies to spawn.