This is awesome, simple yet highly addictive! I even like playing it myself! It is simple, instructions explained in the game. (press space to start any time to skip the instructions) There are 4 medals: Survivor=Shotgun upgrade 60 time Gun slinger=Flamethrower (set grass on fire for protection!) 100 time Last stand=Lightning!!!(burn stuff as well as harm!) 160 time Stock keeper=1000 health, full barricade heal (unavailable anywhere else!) 500+ supplies if the zombies are too slow, TAP ONCE (or it will be too hard)to up the level!