I decided to add this solution after finding out that after several update's the Mansion no longer spawns in the seed given to us by: AAronXXPatriots
EDIT: As point out to me in the comments by Arador
the seed given in AAronXXPatriots
solutions does still work, I don't know why I could not get the Mansion to spawn. I tried it several times but it would never show up
So incase people are running into the same problem like I did, I will leave this solution Online so you can use it if you want to
. Feel free to use his guide or mine, the end result will be the sam, you getting the achievement and that's what counts
So I decided to do some searching on the internet and found another seed that still works (on August 17 2017). So to save everybody else some time by having to search the internet I'm sharing the seed with you all of you.Seed:
The best thing about this seed is that you spawn right on top of the mansion and if you look around you will see another mansion pretty close by.
Credits for this seed go out to YouTuber: ibxtoycat
Here's a link to his video:
His video says that there are 4 Mansions on this seed, I myself haven't looked around the entire map so I don't know if it's still true.
If you find that this seed is no longer working, please tell me in the comments. I will then remove it or change it by adding another seed.And don't forget, as mentioned before: Do NOT set the difficulty to peaceful or the Evokers will not spawn.