Pretty good
I do feel that there needs to be a restart button. In one of the levels (can't remember which one) you start out having to wall jump multiple time to get out of the starting pit. Due to either jumpy hands or just old fashioned me being bad at it, I was stuck in the pit with no rockets and I had to wait for the bomb to go off. So yeah a restart button might help those of us that aren't as good at the parts where we cant just kill ourselves to start over