This game is one of my favorite games so far. I wish I had made it, lol. It feels like a full game, and not the product of a 72-hour jam. Music is very good (even though you guys didn't make it), graphics are AMAZING, level design is great, with good enemy placement, and even though people complained about the combat system I found the mechanics and enemy behavious pretty consistent for a jam. Just found a few enemies kind of hard to defeat (like the carnivorous plant and the jumping slime). The enemy variety was incredible too.
I believe most players will find the second Hard Day too hard. A checkpoint in it could be nice, even if the rest of the game doesn't have this sort of thing...
I should also say that the story seems to be fantastic (my game crashed near the end of the second Harday, but maybe it was my computer's fault, it was running pretty well until then =/). I'll play it all over again so I can see the ending next time. I found the 4-days a week idea great, and also loved the names for each day =)
BTW, there's still a sentence in portuguese in the game when you check the bed, though you guys have probably already noticed it.
Oh, and speaking of that, loved the retro-style dialog boxes. Remind me of pokemon.
Congratulations!