Ai made more aggressive will attack settlements more

Raised Ai chance of attacking nearby settlements, Raised chance of Ai focus of human player

Raised minimum Ai army strength and battle chance success so they will attack with stronger forces and multiple armies.
Lowered chance of getting treaties and raised army costs and upkeep.

Ai with build better navies and invade with more ships

AI will Expand better and Defend better and spend more on armies

Ai should have better defense of capitals, border consolidation, invasions with more army groups, retaking of lost regions

Ai focus on recruitment of armies so faction will be more of a threat at the mid game. Upkeep raised. Building costs raised.

Ai aggression raised, Ai will invade more and defend their regions better, allies help protect better, battles are longer and more difficult; armor stats raised, weapon stats lowered, economy is more difficult; recruitment, upkeep and building costs raised, better naval invasions, more armies, diplomacy tweaked, campaigns will be more difficult

Ai will focus on protecting its holdings more, battle are more intense and longer and dangerous, tweaked morale settings-bigger chance of mass routes,diplomatic settings changed better trade with friendly nations,better chance of peace in prolonged wars, Ai will attack with more armies at once

Raised cash bonus for all major and minor factions by 20%, lowered upkeep cost for Ai factions 15%, Raised gdp trade route values 50%-trade more important now. Raised ai battle buffs by 10% on all difficulty levels, raised Ai recruitment priority 20%, raised shield armor values by 10%, raised matched combat 20%.