Great speed game. A lot of my high scores are in the 100s or 50s in ranking. You can definitely feel the momentum of using the grapple hook. My only complaints are that the FOV isn't adjustable, and the pixel filter can't be reduced in the settings in some way.
The loop level is my favorite, because I actively tried to think of strategies to save as much time as possible. Skim your head on the first platform on (or on the side of) the guardrail, grapple the next platform, skim the point, grapple to the next point, get just enough momentum so that you don't need to grapple to the second to last point, and then fall as soon as possible. It's very precise in planning where to go and grappling to move as fast as possible.