>>206On your west take Sofia asap and on your right head south and take out the fortress south of Nicea, then the island underneath it. THEN keep going south and take Alexandria, Cairo, Gaza & Dongola from Egypt, they can't stop you at this stage. The get your merchants out on the spices & ivory on the fertile crescent and you'll be rolling in cash to fuck over anyone who attacks you, and Egypt will be about to get royally fucked by the crusades and the Mongols. The Venetians are now pretty easy to finish off. When you take Venice give it to Milan or France (whichever is weaker) as they'll keep the other in check and don't expand east. Fortify the city to the east of Venice because Hungary and the HRE come for it a lot, Sofia and Gaza as well.
Now you should really be sitting pretty, you can wait around for the Mongols to attack and a lot will depend on what they do, worst case senario they head for Constantinople, in which case push everything you have against, build the city for a seige and try and cut down there numbers by holding them at bridges and using ambushes.
Assuming you survive, or they don't bother you, you can now just steamroller over Antolia and the middle east, but hold just your own in the west until you done it. Then it's time to take Italy, by now you should be almost unstoppable, take out the weak factions first depending on who owns what, but pretty much all of them are going to be ready to attack you now anyway. If you take all off the Italian peninsuala, corsica, sardinia , Tunisia & the settlement to it's east on Africa and those two castles that are in or around the alps you should have finished the game.