Just a quick note that the more I play both versions of Spelunky, the more I discover what's been added to the game since the original. The PC Wikia seems to largely ignore the 360 release, as it split off into a separate 360 one. So I'll try to cross-check what I can, but could use some help since so much of the text is already written.
If anyone already well versed in the PC version can help to identify things they don't recognise (as 360 specific), I think that would help keep things straight without reformatting the sections. Maybe the new site design will have some features to help with keeping platform differences straight (sent Dave a note).