Gretel and Hansel
http://www.newgrounds.com/portal/view/515322
This game's medals are easy enough to obtain without hacking. I think it'd be more of a waste of time to figure out how to hack than just simply playing it.
I tried finding the shots number because that's the only annoying medal to get in my opinion, but changing it didn't make it trigger earlier. I actually had to shoot 200 times to get that medal.
There's already a pretty full walkthrough here http://www.gretelandhansel.com/walkthrough.html also that tells you how to get everything.