A Simple Shooter

It's a simple shooting game.

You can use a keyboard or a game controller.

On the keyboard press:

Left Key, A: Shoot Left

Right Key, D - Shoot Right

On a controller:

Press Left on D-Pad or Left on the left analog stick

Press Right on D-Pad or Right on the left analog stick

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After defeating the enemy spawners, an upgrade window will pop up, select an upgrade to continue (by clicking). When a stat is at maximum, the upgrade button for that stat will be disabled.

You can now see Xbox controller buttons the activate the buttons for upgrades.

there is now a level indicator. 

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Known issues:

If you get a game over, you must reload the game to play again.