Easy "Slaughter for My Daughter" and "Parents vs. Zombies":
Go on subway to Laurel Court Station (1 left of starting block) and just keep using the shotgun room over and over til you get it. Go in the room, refill ammo, go out, kill zombies. Wash, rinse, repeat.
the controls are delayed, and unresponsive when you try to jump while moving. i give on this. it was a crappy game anyway. whoever made this and thought they were being clever and trying to make an original game, you're retarded. just make a tower defense game, then more people won't hate you. 0/5
Easy Money: Play until you unlock level 10, and just do that level over and over to rack up bank. Just go on another website, or watch TV or something and just check it every 5 minutes or so. Level 10 is extremely easy and you get 10,000 every time you do it.
You can get the White Castle Wars Challenge and Defender of Kingdoms Badge by clicking "2-player" and just playing 2 games (the challenge is glitched so you don't need 3 if you do it this way). Just discard cards for player 2 and win as player 1.