Three diagrams for Resistance 2 have been posted on Surfer Girl's blog, apparently by DA Golaith, who have hacked into Surfer Girl's Google/Blogger account and likely uncovered the diagrams from her emails.
In what appear to be internal design diagrams for Resistance 2, we get to see the multiplayer classes, story treatment, and even scene-by-scene visual story treatment of the game - in great details.
The diagrams are not reposted here because of copyright concern. Be warned: they contain major spoilers.
• The story of Surfer Girl's email and blog account getting hacked has been reported under "Surfer Girl's account hacked - her name and secrets revealed". See the first alternative link.
• The diagrams at Surfer Girl's site have been removed, but they have been saved by visitors and are being hosted at GameTrailers.com. See the second alternative link "Diagrams & Spoilers".