There're 3 sections in the game: green, purple, red. In green and purple, fire for ground and ice (freeze) for air works best. In red, freeze enemies with Striker and keep using lightning, especially the second lightning spell Mjolnir; fire is only needed to handle the bombs and fast air monsters (use Pyro for this). This is the easiest way I've found to win. 5/5 =]
Um. If you set the birth date to January 1st (I accidentally clicked go on before setting it), the characters in the castle turn... weird. At least that's what happened to me. Try it out after your first play. Sorta refeshing, in a strange way.
WOOP! Awesome fresh concept on an oldie but goldie. Hard badge ain't that hard, folks! I got it in less than 10 tries. What you have to do is just keep your eyes focused on the general centre of the screen, trust in your fingers enough not to look down. The power-ups A (autopilot) and C (clear all) are A MUST! They determine whether you get the badge or not, trust me. Power-ups 3 and S are fantastic as well! D is okay. But for the life of me, I can't figure how U helps. So besides A and C, don't risk losing your combo to try to get a power-up you can't reach in time, especially for L (life). Ain't worth it. Good luck and have fun! =D
FINALLY. After ~6 hours and 77 in-game days, I've FINALLY got 2500 stupid people. Seriously, that badge should be changed to a hard instead of medium. It takes WAY too much time and effort to complete. That may be the hardest medium badge I have. You're lucky, Game Dev, that I'm a freaking OCD when it comes to earning badges and achievements. 3/5