Basileus

Basileus is one of the harder achievements in EUIV yet with good luck and a good plan this achievement is certainly in the reach of any player.
Good luck and may you restore Byzantium to its former glory.
Politic Revolutionnaire

The Grand Campaign

In the year 1444 the situation is dire for what remains of the once mighty Byzantine Empire is reduced to a mearge 3 province and a vassal Athens(which strengely costs dip to annex). It must take a great deal of luck and skill to survive and thrive and to restore Byzantium to its former glory.

In the beginning of the game the following must be true:
1. Poland is rivaled to Ottomans
2. Hungary is rivaled to Ottomans
3. You have a diplo rep advisor available
4. Serbia does not rival you

In addition these are conditions that you would like
1. Austria is rivalled to Ottomans
2. Aragon is rivalled to Ottomans
3. Austria is rivalled to Venice
4. Hungary is rivalled to Venice

Once you begin immediately delete the fort in southern Greece, you do not need it and it will only cost money. Send 1 diplomat to Poland, 1 diplomat to Hungary and 1 diplomat with an alliance to Serbia. The diplomats you sent to Hungary and Poland must improve relations. In additon hire the diplo rep adviser at the start. While waiting for your alliances begin building as many gallies as possible it is optimal to have 35 when you declare war in order to block the straights between Anatolia and Europe. Once your diplomat returns from the alliance with Serbia improve relations with Aragon, Austria or another major power. Keep improving relations with all powers until you can obtain a royal marriage, offer the royal marriage then the alliance ASAP and continue to build gallies. As soon as you secure all the allies you wish (Poland, Hungary, Serbia and someone else) fire your diplo rep adviser and continue building gallies. If luck be with you the Ottomans will declare war on the Mamuluks and you can trap their armies in Anatolia with 35 gallies. Then you can proceed to siege their capital and anyother provinces in Greece with the help of your allies. In the first war you need the Ottomans to return all cores. In the second war you must remove them from the Balkans and with the third war you and your allies should be powerful enough to 100% peace the Ottomans and remove them as a world power forever more. Once you have eliminated the Ottomans you can breathe a sigh of relief and continue until you have restored the Empire to its former glory. Congratulations if this guide helps you get the achievement and have fun.

Screenshots

This screenshot depicts the Byzantine start in 1444.

This screenshot depicts the land you should have gained after a succesful first war.

This screenshot depicts the advances after the third war with the Ottomans.

This depicts the provinces needed for the achievement source EU4 wiki.

Updated Version Link!

1.14: http://steamcommunity.com/sharedfiles/filedetails/?id=590898871

[SapphicKerfuffle]

For anyone whoe wants to see the updated version here is the link
http://steamcommunity.com/sharedfiles/filedetails/?id=590898871

[SapphicKerfuffle]

For anyone interested Im making a version for 1.14 that includes a video guide portion if one so prefers. Its actualy really easy to get in the Cossacks

[GEEBUSCRUST]

@Politic Revolutionnaire It honestly was one of the more fun games of EU I have had in a while. It's actually funny about the Poland-Lithuanian merging as I was Polands greatest ally and the reason they were even able to keep Lithuania under their belt. But as soon as they merged as one Poland betrayed me and broke our almost 400 year alliance.

[SapphicKerfuffle]

@GEEBUSCRUST Very nice game seems like you had fun. Also did poland eat Lithuania manually?

[GEEBUSCRUST]

Nice guide! This is the Byzantium I created by using this guide to get me started
http://steamcommunity.com/sharedfiles/filedetails/?id=576370672

[SapphicKerfuffle]

Yes with patch 1.14 you cannot blockade straits that the enemy controls both sides this guide is not qute obselete since you can siege down Edirene yet that requires extreme luck on your part. Soon i will release a guide for 1.14.

[Grå Gås]

You cant block the strait anymore?

[bloatarder]

did it , holy fuck i needed so much luck, since you cant block the strait anymore i trapped them on corfu when they attacked venice

[Commander Critic]

The new expansion has made this useless

[Grå Gås]

Serbia always rivals me, And only either Hungary or Poland rival the Ottos, never at the same time