I would suggest that you make the game have a Hard mode or a European Extreme (MGS) reference, because i found that i beat the game only taking 4 hits and it was defiantly to easy for a hardcore gamer to enjoy. :p
Gets very tedious at level 20 Not worth playing past that point if you have best weapons it would be alot better of you fixed the glitches with the zombies getting stuck on cars so they cant attack me and And the infinitive chainsaw glitch where you break a car get a chainsaw buy a new weapon and get it again and you have a chainsaw and infinitive health forever Yes but all you need is more stuff to do and a little more content and testing and you have a 5/5 game + this comment if you want these things FIXED
A good trick is to keep waving your mouse up and down to keep momentum and speed and be aware of what is ahead you can easily get a 100 + multiplier and all the badges in one go
You need to add a third way to control the turnup sometimes with those key that you have assigned i double click on accident or press space 2 times. :(
 "Hell Tetris"){kind=icon}
 "ACTION TURNIP!!!"){kind=icon}
 "Give Up, Robot"){kind=icon}
 "Dream Tower"){kind=icon}
 "Geek Mind"){kind=icon}
 "Big Pixel Zombies"){kind=icon}
 "Coma"){kind=icon}
 "Solipskier"){kind=icon}
 "Punk-o-matic 2"){kind=icon}
 "Zombies Took My Daughter!"){kind=icon}
 "Hunter Story"){kind=icon}
 "Kongai Launch"){kind=icon}
 "Don't Shit Your Pants"){kind=icon}
 "Epileptic Headsmashing Game 2000+ Deluxe!"){kind=icon}
 "Can Your Pet?"){kind=icon}
 "Ayumilove HackerStory V1"){kind=icon}