Don't buy mission 30 or you won't get the badge! Whichever mission is your last, make sure you actually do it. (So don't leave a Cargo for last. Gawd.)
It pains me to see a sequel to such a great game make such a noob mistake with the mouse. If you lose focus, do NOT send the mouse to 0,0. Leave it where it was last seen at the edge.
Time bonus needs to be way more. Hard to care about time when it is the difference between a 20 and 30 bonus when I pick 200 up off the ground. And there is no waiting penalty so this is like a Papa game with no tension.
A lot of the choices are sound zombie tactics, but some are just senseless gotchas. Deisel is good for 2 years, and if the bus dies, we all die. Of course I'm going to take two seconds to check for gas before entering the zombie infested gas station. And I was JUST on the roof of the bus, but didn't notice the zombie there? Shenannigans.
 "Arkandian Explorer"){kind=icon}
 "Cloud Wars"){kind=icon}
 "Heavens"){kind=icon}
 "Hordes and Lords"){kind=icon}
 "Into Space 2"){kind=icon}
 "Death vs Monstars 2"){kind=icon}
 "Jacksmith"){kind=icon}
 "NoNoSparks: The Ark"){kind=icon}
 "Coma"){kind=icon}
 "Jahooma's LogicBox"){kind=icon}
 "Zombus"){kind=icon}
 "Elemental Balance"){kind=icon}
 "Wacky Wings"){kind=icon}
 "My Pet Protector 3"){kind=icon}
 "The Sagittarian 2"){kind=icon}
 "Pick and Dig 3"){kind=icon}
 "Zombie at the Gates"){kind=icon}
 "My Big Friend"){kind=icon}