Octane,
Your only real hope is file carving software, a specialist forensics tool.
Can't really recommend any, and the best stuff is of course commercial and costs $$$, but a few free/cheap names you might want to peruse :
CnW Recovery Software
Simple Carver Suite
Foremost
ReviveIT (RevIT)
PhotoRec
Feel free to Googoo "file carving" for more options.
Good luck, and if you can, I'd strongly suggest running tools off an image rather than directly on the media.