Keep training more units, as you will unavoidably suffer casualties. Once you have about 15 gurkhas, 15 sepoys and 2-3 siege elephants, start pushing forward at east. Don't worry, there'll be a lot of elephants used in the next scenario. For this scenario, we're aiming for an army, which consists of Gurkhas and Sepoys, with Siege elephants for siege. Build a barracks, upgrade your sepoys and train some gurkha. Go take out the barracks to the east with your army, remember to use Nanib's Eye of the Assassin and Fire Command special abilities. The 500 wood shipment is pretty good, since Indians get experience points from the herdable animals (even more so when you build the sacred field) - you can have most of your villagers on food and gold for unit production.

Build a market and keep expanding your economy with upgrades and constant villager production. A few enemies come to your base from the west, so send 5-6 sepoys there. To reduce losses, it's a good idea to hit and run the enemies. Once the sepoy shipment is out, go claim the trading post. After that, you can continuously send the 500 wood shipment, as the other shipments you have aren't that useful.

Claim the treasures and herdable animals nearby and start building an economy. Build your town center right away, the area is good.

Aoe iii asian dynasties walkthrough