New update posted last night.

List of changes:

Fixed bug that allowed the player to go under the bottom of the screen.

Fixed bug that crashed the game when the player is killed by a mine.

Enemies now spawn higher and lower to prevent the player from beating the level by running across the top and bottom of the screen. 

Added a controls screen.

Added a new "You are American" screen at the start of the first level.

Added our logo to the start of the game.

Added main menu music.

Added burst fire for enemies.