- must have
+ nice to have

Game:
  + music

Title Screen:
  + make lady wave

Wave Screen:
  7 - make people come through doors
  8 - add scoring
  + add countdown
  + add voice effects

Purchase Screen:
  9 - add money earned
X  2 - add ailment effects
X    3 - handle death
X  1 - add new ailment each day
  + cycle purchasable items
  + add purchase sound effect
  + add more goods
  + add more ailments

Game Over Screen:
X  4 - make dead lady graphic
X  5 - add screen
X  6 - add click to restart
