Version 2:
Camera improvements - smoothly follows the characters instead of jumping around all the time
Characters now have icons/images that vaguely resemble people
Survive more hits - without armor they can take 5 hits, and with armor they take 10
Medic kits - restore health to characters
Tutorial - show how the game works
Game creation options - choose world size, # of survivors, enemy density, item density
Sound effects - created using bfxr
Spaceship - well, really more of a box