Ludum Dare 28

      Plot:                                                Controls:
       An evil entity has invaded Earth.                    Move left/right: A/D
       You are the last of our defences.                    Jump: W
       You have only one life, one Core, one chance.        Shoot: Mouse click
                                                            Restart: Reload page
      Credit:
       Art, sound effects: Phaser (phaser.io)
       Music: Flick3r (freesounds.com)