What does the cursed eye do?

[LadyRamkin]

Other than make beaten levels red.

[LadyRamkin]

And how do you get to the big guy in the second level-area place.

[TheFatFairy]

One of the curses that makes the game more difficult, this one specifically makes enemies a little bit more active (And you also get a special mark on the levels you've beaten)