How did you implement the Theme: Devious Puppeteer in your game?
It's mostly subtle and vague. I took the theme of the challenge as symbolic rather than literal. There is some usage of "scopophobia" (Fear of being observed/watched), which implies that the main protagonist (The Child) is akin to being part of a grander play that the final release of the game is yet to expand upon.

For a visual novel done in Ren'Py, doing back-end alone is not my greatest suit. However, the second character is inspired by stage plays (Her sprites do look like she is on a stage play), therefore, she is designed to resemble a character you might see on theater.

Did you implement any of the Bonus Challenges, and if so, which ones?
The only sections that I did the Bonus Challenges are having a puppet show within the visual novel, and the Player attempting to control the main character's choices (Despite most of the game's plot and gameplay being linear, the Player has a bunch of choices to decide the Child's character in the demo. There are not much choices, but the dialogue that follows shows how clueless the Child is to the Player's existence... compared to the demo in Zero Hours Later showing that build-up of awareness of the Player's actions).

The CG scenes in the demo have implications of a puppet show (and puppets). There is a bit of foreshadowing in one of the CGs, however. But that's all I can say for this demo build I will submit.

Does your game contain AI-generated assets?