Absolutely gorgeous art! Did you make this all for this jam? Or is this from a pack? I'm getting some Hyper Light Drifter + MANDAGON vibes from it, and I'm all for it. Very cute sprites too.
Game is a little janky in it's current state, but I'm sure you knew that. There's honestly a laundry list of bugs that I ran into during my playthrough. The most annoying was how common it was for the character to clip through a wall and fall to the bottom of the map.
In a complete state, this could legit be a game I would buy on Steam. Add in a dope story/lore. Use the brother character to implement multiplayer. Use the attack mechanic to actually fight monsters. Create more varied and complicated puzzles. I can so easily see a version of this game that would be very, very fun to play.