Here are the requirements for Revision 5:
1) Additional weapons
Add 1 knife and 3 rifiles to the current selection - images and names will be provided.
2) Weapons by distance
Each weapon will have a distance it can reach - distances to be provided.
Weapon will not be able to eliminate a target outside of its distance. A pop-up will display notifying the user of the distance that weapon can shoot and asking them to select another weapon.
3) Update 'Aim' screen.
Make the target move around the screen slowly.
Also, the farther away the target, the smaller the target image (%-wise)
Have tilting of the iphone control the crosshairs
4) Add In-App Purchases
Change Inventory so one gun and one rifle are available at the start
After each level (from their scores) a new gun will be available for free.
Any of the guns can be purchased at any time with in-app purchase for $.99.