Early game send some villagers and a small pikemen/camel/skirm unit to the orange village and mine the stone/gold.
Put your castles/towers near the water next to your dock and get the castle tech upgrades, primarily Murder Holes and Heated Shot, then invade teal and work your way up to the red bandit base behind the yellow village, clear the peninsula on the left side of the map, theres a lot of gold/stone there and blue has an outpost at the very tip.
destroy their dock there.
Send villagers to the gold at the former bandit base at the north end of the pensinsula, build a TC there and build some military buildings and docks along the river.
You can just demolition ship their docks and then transport ship some units and clear them.
They have a castle if you want send some villagers on a transport ship and build a castle to petard it to death