There is a file under the name of *_hype_generated_script.js that is the one referenced in the .html which contains your document data. It also has loading code to determine what other files are needed to execute the animation. A version of one of these runtime files will always be required:
These files are the basic animation library. They are the same for every Hype document. (That said, they are tied to the version of Hype - you are using the v4.0.0 libraries. I'd recommend upgrading to 4.0.1!)
There's more information on what gets exported and each of its rules in our exporting documentation.
In short, you will need the document+loader javascript and the runtime javascript files. Depending on your document you may also need other files that the loader will bring in, or assets that the runtime will load. This diagram show the loading flow, but is probably overkill to learn about all the details 
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Does that help?