Thank you for your feedback. Yes, most jumps are really precise (although to call them pixel perfect is a bit of a stretch I think). The trick is to take a step back before making the jumps, then lightly tap the direction key, then you'll land just fine. One thing I didn't have time to finish was that on the first dash jump above the spikes, it seems as if you have to jump between the spikes and not over them, but that is not the case.