The difficulty curve in the game is a bit...off. Level 3 is easily the hardest level, which shouldn't be the case considering there are 11 more after it. Would be nice to have some actual advancement beyond "you just unlocked gun! game is now easier." Overall I enjoyed it, however.
 "Five-Leaf Clover")
 "no-one has to die.")
 "Zomgies 2")