This game has a very pretty visual affect, and I like the implication of the name pan (referring to the greek patron god of the forest?) I'm a little disappointed at the lack of direction and I was left very confused very quickly on my initial playthrough. After fiddling with the mechanics and figuring out that you can both double jump and wall jump, I decided to try climbing the tree at the start since there was no clear indicated path as to where to go after the immediate starting area. While beautifully put together, I think this game definitely lacked in some sense of player guidance, which is a major part of level design that can be easily overlooked given time constraints. Regardless, a simple sign or even text in the sky would have served its purpose in ensuring that any new player may be able to travel a little further than the front step of the game.
Movementwise, it feels pretty good, though the camera movement was frustrating as since it followed the direction of the player and never readjusted nor was manually readjustable, the area immediately past the spawnpoint was pretty difficult to traverse since most of the jumps were blind. In a platformer without guiding elements such as collectibles (coins, fruits, dots, etc.) or signs this is ultimately a combination that makes playing this game a little more frustrating than it has to be. Fixing the camera to allow the player to see whats ahead of them would be a major fix that isn't too difficult to do if you were interested in making a similar style game in the future. Additionally, removing any assets that exist in the foreground or editing them to not block platforming blocks would also make this game generally more pleasant to play.
Despite all of this, I don't want you to feel like your game was not good, as it was fairly well polished for a 2D platformer, especially one entered in a game jam like this. I think with a little more care to the game design element of the game, you would have a good product become a great one. Keep learning, growing, and take this experience with you to make more awesome games. Great job putting something out there! :)