Emergency: Fire Response Cheats (PC)

This procedure involves editing a game file; create a backup copy of
  the file before proceeding. Use a text editor to edit the "difffle"
  file in the "dreamcatcheremergency fire responselogic"
  folder. Look at the numbers and look at the difficulty settings.
  Change the numbers to a new value. Do not change the numbers higher
  than 9.75 as it may crash the game.

Note this involves editting a game file, so make a back-up before proceeding.

Look for the progress.dat file in the ...\dreamcatcher\emergency fire
response\save directory. Use a text editor to open and edit that file and change the
number on the Progress line to 9, and the number on the line Star to 5, which will give
you 5 medals for each scenario.

Then type Star 2 to 9 under each line, exactly as the first 2 were written, adding the
number 5 at the end of each line. Save the file (as a *.DAT file) and you're done.