Amazing and very tricky game, I had to play it on coward difficulty (please dont judge :() but I sure had plenty of fun.
I thing your visuals are very unique and give the game its own personality, good job using the colors to teach the player what can be interacted with and which are the dangers, so great game design right there as well.
Also, I love how you modify the amazing main sound loop when changing speed, it gives that extra movement feeling that builds up the overall gameplay sensation.
Congratulations on your game, outstanding work, and even more being this your first unity project!
PS: I will never give up, thank you for your wise teachings shovel-sensei