Yeah my medium badge isn't working either. You can screenshot and use 'report missing achievement' (at the bottom of the "achievements" screen to the right of the game) to get it
I played the second game first, and so I keep forgetting that I can't jump diagonally and that I have to click down again instead of just stop holding it down.
I just bombarded the alien zoo with a planetoid named Arthur (150 mi), and I left without pausing, and when I came back suddenly I saw the T-Rex in a 59 mi Planetoid name Arthur and two pixelized faces telling me I beat the game
I loved how you could make your own tanks, but the fact that the game goes laggy as **** whenever you get your class high enough to have more than 2 weapons disappoints me.
 "Zombie And Juliet"){kind=icon}
 "Rogue Soul 2"){kind=icon}
 "Accelerator"){kind=icon}
 "BoomsticK"){kind=icon}
 "Freeway Fury"){kind=icon}
 "Effing Meteors"){kind=icon}
 "Flight"){kind=icon}
 "Upgrade Complete 2"){kind=icon}
 "Bubble Tanks 3"){kind=icon}
 "The Necronomicon"){kind=icon}
 "The Visitor: Massacre at Camp Happy"){kind=icon}