Okay, here's a difficult one, perhaps.
- Eldritch Abomination / Cosmic Horror
- Romantic comedy
- On the set of Jeopardy
Play it as straight as possible, meaning, the romantic comedy element should not be played as some form of parody but as an actual romantic comedy, and there actually should be a cosmic horror, Cthulhu style, either as a love interest or as an actual being of horror which brings the two lovers closer to each other. The last one especially would be hard without letting it devolve into straight-up horror and without letting the cosmic horror element down, although the former would be very challenging to let it be both romantic and comedic without making it feel like some parody.
Good luck, soldier! Make me proud!