Army of Destruction - shooting game

Army of Destruction is a free online flash game of the category shooting games.

[NOW WITH MORE LEVELS]
This is an action shooter where you have to defend your city from the alien invasion.
The game has 15 intense levels, unique story, 6 unlockable weapons, base upgrades and 6 different enemy units.
Beat the game and watch the great final.
UPDATE:
Based on the community feedback, a lot of people found this game too difficult on the first levels and easy on the last levels. Now we balanced the weapons and enemies to fix this.
The hit area has been changed a little bit, and the weapons areas and damage has been changed also.
TIP: Every Enemy has a weapon to defeat it, shotgun and pistol for kamikazes, rifle for bikers and cloack soldiers, rocket and laser for mech units.
UPDATE 2
We have added 4 new levels. If you find this game too easy, try this new version for a challenge
UPDATE 3
Some people said that mission 10 was way too hard. We’ve tweaked it a bit to make the mission a little easer

Use your mouse to aim, click to shoot, change your weapon with the 1,2,3,4,5 and 6 keys.
You can use the mouse wheel to faster change of weapon.

A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.