I did "A Servant No Longer" in CK2, taking a young eunuch duke under the Abbasids and ruling an empire of a certain size before he died. I just took over the Abbasids because that was easiest. After I became caliph I became a satanist and grew my dick and balls back but died in battle before I could sire an heir. Still a good time

Now I'm trying to do a bunch of achievements in one run:

• "Never Start a Land War in Asia": Starting in Western Europe, control the eastern steppe
• "Norse-East": As a Norse character, become king of Mongolia
• "Legacy of the Indo-Norse": As a Norse character, have a kingdom in India as your primary title and a capital in India with Norse culture
• "Viking Ummah": Have a capital with Norse culture and Sunni religion

My start of choice is the classic Haesteinn in 867. On my current run I've got my kingdom in India set up but having second thoughts about the routing because it's more toward the south of India, so it'll take longer to get to Mongolia. I also only lumped Viking Ummah into this because islam would get me out of gavelkind succession and I don't want to spend tech on increasing legalism until I get my capital settled

Might restart with a slightly more optimized route and defensive pacts off so I can carve a path north easier. Only gotta hope the Western protectorate doesn't blob like it did in my Aladdin game