Fun game! Really well done, I liked the overall feel.
I agree that the difficulty curve at the beginning is a bit high, it took me way too long to get over that first wall, lol. I would also say that I instinctively wanted to press space bar to jump rather than using up arrow/W, which probably didn't help me with trying to get up the wall.
Great job, it's an awesome game, and really amazing how well put together it feels with the short time you have in game jams!