Hehe, i went and checked my folder and this Brackeys tutorial was actually the first tutorial i did to get started on Unity.
Think your version is more fun than mine though. You made some good levels with what felt as perfect placement for obstacles to create an enjoyable experience :) Also the speed was just right to make it interesting and fun.
After using the rewind mechanic the speed is slower than before you used it, so the velocity is still building up. So basically it feels too easy when using it.
Nevertheless good job, keep learning and keep jamming :)