The perfect rage game. I agree with the previous commenter that starting a bit slower would probably increase the fun, right now it's very unforgiving. Another option would be to have the rewind function always be available, but with a cool down, so it's a gamble to use it because maybe an unavoidable obstacle will come right after.
Would appreciate if you could have a look at my game also. It's only my second game ever, only started with gamedev earlier this year.