Managed to get Rain Demo working in Tizen Simulator this way...
1. Create a New Tizen Web Project > Basic
2. Copy all the content in exported C2 project,
3. Paste in created Basic Web Project folder, overwriting all existing.
4. Hit Run > Simulator ( Bypass all errors )
5. You should see simulator popping up and playing the demo.
I managed to fix most build errors, mostly with config.xml.
However, there is this weird error in c2runtime.js that I can't shake off:
But ignoring this, you can still build a .wgt package, but I haven't test it on actual device...as there are still none in the market lol.
Hope this helps get something started :)