The main objective of Age of War 2 is to build and upgrade your army to defeat opponents while defending your base. You aim to advance through different ages to unlock stronger units and abilities.

Resources are collected by generating income over time. You spend resources to create units and upgrade your defenses, which helps you progress in the game.

To upgrade your units, focus on saving enough resources. Select the unit you want to upgrade in the unit tab and choose the upgrade option, which enhances its stats and effectiveness in battle.

Winning battles requires a mix of offense and defense. Build a diverse army, balance your resources between offense and defense, and adapt your strategy based on the opponent’s units. Timing your attacks is crucial.

Advancing through ages allows you to access stronger units. To do so, you need to accumulate enough resources and click the 'Age Up' button when available. This unlocks new units and enhancements. Here are the steps:
1. Collect resources consistently.
2. Monitor when enough resources are available.
3. Click on the 'Age Up' button.
4. Strategically utilize new units in battle.