Is this limited to story tropes or do level tropes count too?(like trying to make a good survival level)
Is the point to take a cliche and make a serious version of it or to be fun/quirky/meta and poke fun at it?
You're not limited to doing a story, a survival level also fits the criteria. Without a story however, it may be more difficult to impress the judges with your unique twist on the cliché - it has to be more than just a good level, we're looking for some clever or surprising twist.
If you have a clear and inspired vision, go with it
Whether to be funny, serious, or a mix of both is entirely up to you. The important thing is to create something fun and engaging