Instructions:

Armor Hero snipers enemies to prevent them entering the building.
Aim the enemy then left click to shoot. It will take some time to reload after all ammo are used, during that time you cannot shoot.
You lose life when enemies get close to the building. Game over when you have no life. You can continue the current level after game over.
The game will be saved to local automatically.
You gain money after each kill, you can buy new weapons and items to buff your power after each level.