on the Sacrifice level, you don't HAVE to use the demon vampire thing, you can use anything as long as you dip them in the lava then push them against the burnable box
Save the game before you go searching, if you don't like what you find you can reload the file and do something else (if you go searching again you'll find the same things)
yea, touching the sky is ridiculous, that's not even fair you can go the whole game without touching it a single time then at the last second touch it and lose ALL your points, as soon as that happened i quit and i'm never playing again