I don't want to spoil anything, but I will say that it seemed like it was a tad too easy to get one secret medal. I was surprised I managed to get that far with the fifty point medal. It seems like this didn't even have that much to do with a cabin in the woods. BTW, that's one of my favorite movies of this year. It was pretty much killer when the giant foot came. Was that a Monty Python reference?
Anyway, when I used my strongest attack, it did pretty much nothing against the foot. Maybe I just aimed it poorly? The graphics weren't that good, but still nice. I was amazed at how I was able to get into this game so much. I just couldn't stop attacking the enemies, which is the only way to win in fact.