Solution: Sleep Talk
Answer: WAKE UP
Written by betaveros
If you try to solve the clues directly, you'll quickly discover that they're all ambiguous. There are six countries bordering South Africa, dozens of Greek gods, and literally infinitely many integers! The key to the puzzle is the sleeping guy. He's not actually sleep talking, he's just cartoon-snoring Z's, and all the clues have a fairly clear answer starting with Z. Solve and take the Nth letter as indicated:
The answer is WAKE UP.
If you struggled with solving the fourth clue or could only think of ZETA, you might be a mathematician. (The last sentence describes more of our testsolvers than you might expect.) You'd still extract the right letter though :D