Nice art and music: Samourai Champloo meets Fallout. :)
Loved the game concept, too! Fast-paced and quite challenging.
I guess if I had one regret, it would be not nowing how far I got. Have you considered either giving the game a scoring system, or some rogue like elements to increase replayability? I could definately see a hidden plot line (maybe you're looking for a lost sibling) or some unlockables (new tiles, new events, new starting character, a car,...).
Cheers,