It's weird seeing another game have a similar idea to mine, hahaha. The graphics are pretty good, and the audio is nice, if a bit unfitting for an intense chase. Plus, there's a bug where if you restart the level completely, the audio layers over itself.
The controls, jumping especially, feel way too floaty, which makes fast and precise movement very hard to do. There's also a major issue where the camera is too centered on the character, pushing where you need to go offscreen. I got stuck for a while near the third collectible because the next platform was offscreen and I kept missing it.
The head is also way too fast. It instantly teleports directly to the player every three seconds, which is a lot harder to visualize than something continuously chasing you like in Celeste or in my game. I found myself continuously counting "one, two three" every time I moved in order to make sure I didn't get hit.
That teleportation also makes exiting a checkpoint after dying basically a gamble, since it teleports directly to you almost as soon as you leave.
Overall, still quite a good game! I found it pretty fun and exciting, and I liked the boss fight idea, even if it was a bit easy.