Fixed issues discussed during the first test

Issues brought up during test:

- Why is it in bright mode??? (Fixed)

- Sometimes there's no enemies that spawn (NEED TO FIX!! OCCURS WHEN PLAYER IS OUT OF FUEL)

- Sometimes bullets aren't shot (Fixed)

- Fuel doesn't go down (Fixed)

- Siege enemy dies but then comes back to life ?!?!??!??!? (Needs to be tested)

- You can just go behind the enemies and then kill them (Fixed)

Things to add:

- Spacebar shooting for people with only one hand (Added)

- You Win screen for all you who are grinding this game (Added)

If you manage to win, screenshot your win and send it to me and I will immortalize your win in the credits of the game!