I dislike the control scheme, but hate it with the zombies. I mean, you have to keep just outta reach of the horde, but to do so, you have to have your mouse pointed away from them, so they don't die, and then you turn to kill them, they'r eon you for slowing down.
Wish we could put in parks or trees to reduce smog... other 'n that I love it! Oh, and instead of 999 being the maximum resource, could you increase another place? to 9999?
In my experience, first upgrade your melee to machete, and upgrade your pistol once. Then, just get a shotgun and focus on upgrading to level 3, because an auto shotgun... just isn't fair. I personally think, however, the auto shotgun is better than an upgraded RL, except when you're shooting groups. End with an auto shotgun in each hand. Don't forgot to upgrade armor.
 "Zombie Trailer Park")
 "Sushi Cat 2"){kind=icon}
 "Notebook Wars 2")
 "The Tickler")
 "The World's Hardest Game")
 "Reactance")
 "Homerun In Berzerk Land: Berzerk Ball")
 "Great Game 1/5")
 "Super Energy Apocalypse : RECYCLED!")
 "Mud and Blood 2")
 "zombie horde 3")
 "Endless Zombie Rampage 2")
 "Rebuild")
 "Epic Battle Fantasy 3")