Approach to Tumbes (Impossible) - Pizarro's Raid 3 - American Conquest

This mission progresses in stages. The longer you take to reach the next one, the harder it gets.

Building your Fort close to the chokepoint held by the Aztecs will prevent them from garrisoning their Dwellings, for some reason. The extra trek you Peasants have to do will pay off when you capture the enemy Dwellings with little resistance, as these will otherwise continually spawn units to garrison their buildings across the whole map.
Once the Dwellings are taken, their buildings will stop being reinforced and some may even be left empty.

Avoid destroying enemy buildings, as they will be important to hold the chokepoint once the increasingly larger waves of Mayan Pikemen and Chiefs start coming in. Keep a strong Formation of Halberdiers holding position and maintain a steady flow of reinforcements (and Priests) to them.

The southwest corner of the map has a Temple that gives you Aztec Archers and Spearmen upon capture. These will be useful at supporting the main Halberdier line with missiles, so don't throw them away in melee.

Capture as many Towers as you can on the way to Tumbes. Units in buildings are safe from enemies, so they can shoot at them with impunity.
In between enemy waves, send Priests towards Tumbes. During waves, put them inside the Towers. This will take good timing, but you only need one Priest reaching Tumbes to complete the mission.

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