in this game you are a tank commander and your task is to clear the map from enemy forces.

Once there are no enemies left you've passed the level and can proceed to next one.
Level by level map gets slightly bigger, with more enemies to destroy and more coins to collect on the way. For coins you've collected you can get faster or more armored tank, extra armor or enemies radar.

If you are running out of lives you can search for repair kit somewhere on the map or get back to base point where slowly, but your tank will be repaired completely.
You are safe from enemy fire behind brick wall, but not behind sandbags wall.