Battle City/Walkthrough

Projectile collision

 * Friendly and enemy projectiles will cancel eachother out when they collide in the air.
 * Try to avoid that situation with power tanks in medium-close range or closer, especially when your tank isn't upgraded.
 * Also avoid this situation in case of armored tanks, especially when your tank isn't upgraded or it can lead to a life loss. The more hits armored tank has left, the further the safer range is.

Avoid being cheap-shot by the enemy

 * When tanks are positioned like in this picture, they are vulnerable to eachother's shots. Try moving sideways to avoid it.

Use bricks and steel walls in your advantage

 * When your tank is positioned so, you are in a great advantage. Not only can't enemy shoot at you, but you also have a free shot for the enemy tank.

Thin walls

 * Shooting brick wall 3 times can make the remaining wall to be not destructible from the other side, yet blocks the enemy movement. Wish such tactic, enemy has less paths to your home base, making it easier to defend. This strategy can be used well in level 13 or level 35 for an example.
 * This tactic cannot be used with a tank that has collected 3 stars, because such tank destroys bricks with double power. Thus, in 2-player mode, it's better if only one player has got the tank upgraded to maximum.

Stages
There is very little needed by way of a walkthrough for Battle City. You progress through each stage one at a time (and you can choose what stage you start out on in some versions.) The thing to do immediately when you begin each stage, is to analyze what avenues of approach exist for the enemy to attack your base from, and where you can find shelter for your own tank and attack from. Other than that, keep your eye out for red flashing tanks and collect the power-ups they leave behind as soon as possible.