Hello, I am watching Tim Ruswick's stream from yesterday, and playing along every game.
I had a good time playing your game. I liked the screen-shake a lot. But I'm trying to help you so I'll focus on possible improvements:
I heavily prefer arrow keys over wasd (easier for right-handed play)
I pressed 'R' by accident and lost my progress. Twice.
You can fall out of the map if you hold left or right immediately after entering "let's do it"
Shortly before reaching the end, there was a split, and I wanted to know both ends, but before I knew it I had already completed the game without knowing the other end.
The little chat can be a bit repetitive. At some point I found myself ignoring it because it was getting repetitive. Maybe you could add something that would unconsciously notify the player that he is seeing a message for the first time. An example: Only play the beep beep beep chat-sound if the message is new to the player.
Sometimes staircases are slow because the character is still falling from its previous jump when it reaches the next staircase step, making for a waiting-wallslide. Even if it is only by a fraction of a second, it still slows you down.
I hope you get something out of this feedback.
Cheers,
August