The game, in itself, has the same gameplay each time (unlocking a PC by finding objects, post-its...) but it's still fun to do.
I wonder if the game creators have considered making something longer, with more characters, more floors? Maybe even a larger room with doors that require codes to unlock, for example?
The office setting reminds me a lot of the game The Stanley Parable—perhaps you could draw inspiration from that type of gameplay for a project (what would happen if we didn’t follow the game’s intended path?).
No bugs were detected, and the game is quite intuitive. Overall, I would rate the difficulty around 4/10 (10/10 being impossible, and 5/10 being where some thinking is required).
Cute game and music ! =)