Even though the tutorial is quite informative, you can't learn all about love just by reading stuff on the Internet. There's a lot you will have to figure out by yourself. (PRESS SPACE)
The zombie badge is easy - just spin around really fast! If you're still dying, you're not spinning fast enough to confuse the zombies so they don't ram you.
 "Love"){kind=icon}
 "GrindQuest"){kind=icon}
 "Enigmata"){kind=icon}
 "Take Something Literally"){kind=icon}
 "The Tickler"){kind=icon}
 "Frantic 2"){kind=icon}
 "DAMN Orbs!"){kind=icon}
 "ROFLAttack!"){kind=icon}
 "Sparks and Dust"){kind=icon}
 "Spacetacular Voyage"){kind=icon}
 "Starcom"){kind=icon}
 "Swine Flu: Salvation"){kind=icon}
 "Space Grinder"){kind=icon}
 "Little Wheel"){kind=icon}
 "Polygonal Fury"){kind=icon}
 "Now Boarding: Episode 1"){kind=icon}
 "Cargo Bridge"){kind=icon}
 "Protector III Map Editor"){kind=icon}