Thank you!
Nah, the ending was pretty vague and I would've loved to have fleshed it out a bit more, but we ran out of time xD I also found it tough to convey a story without taking away from the puzzles - but its definitely something to improve on in the future!
For the ending, it's meant to imply (kind of spoiler alert):
Events in his life (as vaguely represented by the puzzles: experiencing bullying, his mother teaching him to put on a facade and caring only about a superficial image) have caused him to live in fear & only for others, which he now regrets. Now he has grown older and time is catching up to him. Finally, it implies that the monster in the game is a representation of his older self that he is afraid of and gradually becoming. The theme is inspired heavily off 'The Love Song of J Alfred Prufrock' (TS Eliot). Hopefully that makes a bit more sense!