...I really don't think it's a good idea to play characters as their stereotypes (not that you are, but you might be). It limits them a lot. As guidelines? Yes, fine and dandy, but we've all have seen, perhaps cringed at, the moron who acts like a moron and is a moron because he's a moron.
I've got my languages and pronunciations all in a bunch, but if "ge" is "jay", it's just something you might want to spell it more phonetically, because it's not much obvious.
Anyway, I'm just talking about a post-apoc setting, versus one that...isn't so much. (Personal pref thing, it's not criticism.) One of those things I pretty much expect to be explained as The Big Reveal. R&D is research and development, and I suppose the cannon was actually being made during the "months", but it sounds like a very short time. Espcially in a low-tech environment, but whatever. Your setting, your rules. (I, personally, don't care to explain why R127 doesn't have planes when they have brooms and guns...) May I suggest the entire severing of limbs? That happens in actual mythology a lot.
Lastly, I'm pretty sure I got my Symphonia reference messed up (unless that Sheenadoken on disc two was an actual weapon fire). Lots of games have The Goddamn Cannon, FF7, SO2, SO3-- Just pick. It's not brilliant anymore. In Phantasia, their same-named WMD did, well, the same thing, under similar circumstances, with the same side effects: &$@#ing the goddess up (among other things). I'm not really talking about races, mind you.
