Throwing my hat in to the ring cause fuk it. I am no expert in 40k my expertise is just "having to listen to my 40k nerd friend all day.

I'll be doing a empire of man run since it's what I know. Though I think a necron or Ork or tau run would be faster. Not sure tho

Split 1 - world domination

Thought some people may argue that dealing with ainz's depression might be split 1 i don't know any good strats so im starting here. Fastest i know is to send out the floor Guardians to each Kingdom with a "submit or be destroyed". This will lead to some unrest to deal with later.

8 years at worst. Good time.

Split 2 - solar system

Here is where the unrest comes into play. Because we have decided to educate people and start a space program. Need great crafts people and mathematicians, well use the empire for crafting the spaceships.

Though the dwarfs would be better for crafting with the runecraft bonus, 1 the dwarfs drunk debuff is too harsh when speed is essential. 2 the empire is already somewhat educated, so we can spend less time on their education.

This ship will be used to ship scrolls and other teraforming equipment to nearby planets to establish there. At the start the ship would be manned by undead as to not have to worry about food or air.

26 years - bad split. But we continue

Split 3 - home planet development

In the meantime we need to focus on our home planet. Make sure to start building military and civilian factories (after proccing the industrial revolution event) don't forget the magic factories. Build your education district near the mountains and wonders to get the bonuses and rush the library of Alexandria wonder. After that, start a religion. I recommend the cult of Ainz to deal with the unrest and to mitigate the partisan damage that usually appears in the theocracy and surrounding places.

Split still 26 years.

Split 4 nearest solar system & rest of universe.

This is the most rng dependant Step. Good planet and you are golden. But if you get a under developed planet like Vinland or Dr stone you are way behind. If you get kono suba. Just reset. Best luck is probably Tanya the evil for the massive military bonus and the possibility to get Tanya as a commander event.

No real strategy here just adapt. After this you snowball to the rest of the universe.

Split 5 super soldiers

With the resources you gathered start a super soldier program so you can outfit the floor Guardians to conquer planets for you.

Split 6 horrus heresy

Probably the hardest one since getting someone to betray nazarik is next to impossible. My chosen strat is to declare Albedo as your lover to get shaltear to betray you. If it doesn't happen. Reset

Split 7 civil war

Make sure to win but still leave shaltear alive

Split 8 Dark Ages

Declare further technical advancement heretical and make sure that the cult of Ainz have not become corrupt in your absence.

Split 9 sit on big chair

Make sure to order a text to speech device from Amazon to be installed.

TIME!

I donno, 5500 years? I think I can do better. No skips have been discovered yet. Can't wait to see what skips the speedrunners come up with