Board Thread:Fun and games/@comment-4024597-20150806084847/@comment-4024597-20150816010530

Zombiecrab wrote: The Wall-nut's left eyebrow is missing. It is there, just too small to be seen (It took me a few minutes to find it, just zoom in)

I'm giving hint 4 early:
 * How to solve hint 2: Rewind
 * How to solve hint 3: Gravity Falls