I'm a 1200 on chess.com and people at my level play random openings. They usually don't blunder and the games often go to boring, equal endgames.
I have been loving the Vienna game because most of my opponents fall for the Vienna gambit (because of not knowing the critical d5 move)!
What are some other openings that could destroy the opponents quickly if they don't know the critical moves/theory, for both White and Black?