Thank you for your comment! Glad you enjoyed it!
I think you are right with the walk/run mode - perhaps best to invert it in the future. In the original builds, a lot more of the jumps required more precise jumping with no chance to build up speed, but as I balanced the game it became less necessary.
Adding an auto-target for closer targets is a good idea - especially as currently there is no use for Lumen other than going towards targets.