As someone who really enjoys metroidvanias, I’ve had a good time with the game’s challenging levels. That said, it does feel like some sections may not have gone through extensive playtesting with a wider group of players.
A few parts were a bit frustrating for me. For example, the brick background can be quite hard on the eyes—especially at high speeds, where it blurs by and creates a repetitive visual effect. Since speed is a key part of the game, this becomes more noticeable. One possible solution could be to simplify the brick texture—maybe just drawing fewer bricks to give the impression of a wall without overwhelming the player visually.. Video
Also, the camera feels very rigid, as it’s locked directly onto the player without any damping or delay. Adding a bit of camera smoothing would really help with the overall feel. I’d recommend checking out thePlatformer Toolkit by GMTK if you haven’t already—it offers some great insights on this.
I hope this feedback is helpful as you continue developing, and I’m excited to see how your future projects evolve! ^_~
Edit: Sorry, I had some harsh words before and edited it a bit to feel more pleasing.