I loved the character design and I felt the heaviness of the golem with the physics, and the level was fun to explore despite being linear. The persistent unlockable abilities were well implemented and gave me some "aha" moments. My main feedback would be to alter the controls to more traditional buttons (or let the player choose them) and to add some more quality of life features which are commonplace in most modern platformers like coyote time and smoothed player acceleration to alleviate some minor frustrations with movement.
Great game overall!