For the feeding of the people inside town, why not make a training dummy in town? People could not only feed their heroes, but also test out how powerful new builds are.
That awkward moment when all the guards move directly to your extraction point, abandoning the man they're trying to protect.
You may not stop the guy from killing your charge, but you'll sure as heck get him eventually.
Simplistic, but very entertaining, music would be a good idea, and there is a really big lag spike when increasing the high score (number on the right). Maybe only submiting highscores after the person fails? Good game though.
 "The Grinns Tale"){kind=icon}
 "Ultimate Assassin 3"){kind=icon}
 "Dream Symphony"){kind=icon}
 "Knightmare Tower"){kind=icon}
 "Reprisal"){kind=icon}
 "Nuclear Outrun"){kind=icon}
 "Axon"){kind=icon}
 "Color Link-a-Pix Light Vol 1"){kind=icon}
 "Invertion"){kind=icon}
 "Pursuit of hat"){kind=icon}
 "One and One Story"){kind=icon}
 "Linx"){kind=icon}
 "Riddle X"){kind=icon}
 "Dude and Zombies"){kind=icon}
 "Reproduce"){kind=icon}
 "Man in Gap"){kind=icon}
 "Wish Upon a Star"){kind=icon}
 "Goin Up"){kind=icon}