Feels like this game was a bit too ambitious for the time and/or resources available. The character feels very clunky, and with no instructions on how to control them and no real guidelines as for to what to do, I'm not entirely sure I'm even engaging with the game as was intended. While I did find the Macguffin, it kind of feels like I cheated to get there by jumping across a shortcut instead of going through the intended path, but if those walls with the glowing particle effects are meant to be doors then I couldn't figure out how to open them.
All the same, game jams are for experimentation and this does feel like a game that had ideas, so better luck next time!