Relatively minor quibble:
In the creature description for the vault citizens (all genders and types), you forgot the 'e' in 'whose.' Seeing 'whos' gets a bit confusing, and it's a tad irritating to have to fix this myself every time I update.

You're aware that grenades don't work, right? I know that they used to function properly in older versions, but maybe I'm just forgetting how to use them...