Did you notice the log messages in the black/green matrix like box down left? I felt like that didn't quite come through as planned. It says what was enabled when picking up the different items. It should maybe also hint about controls... I kind of messed up on letting the player know about the controls. Lesson learned. Thanks!
Regarding movement speed, I set it pretty early in order to not mess up how far the player can jump etc. I rather felt like it goes too fast when having the battery upgrade and dashing.