Álmost There
Very rare1.8%ObjectiveOptionalSingle-player
As Álmos Árpád, form Hungary and convert to Christianity
Character-locked: Álmos Árpád, 867. Open with the Migrate to Pannonia CB - it spawns two powerful armies in your capital and you'll outnumber the Bulgarians roughly two to one. Once settled in Pannonia, form the Kingdom of Hungary, then convert to any Christian faith (any flavour counts, despite the old Xbox wording saying Catholic). Two boxes ticked, achievement.