OK, I’m starting to flag now. I’m not sure why. Maybe it’s the size of the levels – which are HUGE. Probably too huge, actually. When was the last time you played a 2D platformer where some levels were almost an hour long? Yes, some of the time is spent puzzling not run-and-jumping, but still – it’s ages. Especially since you can’t save mid-level.
It’s getting harder too. I’ve lost a few lives now, but still have over 20 in reserve so I’m not worried yet. My save file says I’m 50% done, but I don’t know if that includes secrets and hidden exits and stuff.