Build a game for me (Unity or Gamemaker)

Hi i need someone to build a little game in game maker or unity which will be a 1v1 tank fight, just a 2D simple game, however needs to document the work and show how it was made, this will involve alot of writing so will need good english. it will need story boards as well as comments on coding and how the game was created i will brief you further once the task is accepted but it may involve a 2000-3000 word essay in comments and documentation of the game