Bridge Mochi Games API with existing website login

I need the Mochi Games API installed on an existing PHP/MySQL site that has it's own user registration system. Documentation Link: [login to view URL] The game integration should be seemless between my site and Mochi. All scores should be unique to my site and reward users on my site when they receive high scores in games through the Mochi API. This should be a simple integration, but I have ran out of time. I need this done for less than $100.