The roll mechanic was interesting. I like how you could turn into a ball and bounce around to gain extra height. The grapple mechanic felt a little buggy at first until I realized that the grapple target is the center of the screen. It would be helpful if the target were visible at all times or if there were an auto-target feature. Once the grapple works, it's cool to gain additional height & speed. Adding character animations would enhance the polish of each ability. Overall, good job and congrats on submitting!
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Thanks for writing! It's true that the grappling UI needs improving so that the player knows that they are aiming at all times. I think it could be shrunk or made more transparent while a target is not currently being aimed at, so that there is also a way to communicate to the player that they are currently aiming at a grapple point and that they can now grapple to it. I'll look into improving that. Auto-target or a target lock-on would also be nice features to help make grappling around easier.
Thanks for the review and for the ideas!