Glad you like the game. Thanks for pointing that out (I guess I must have never died on that screen with the Jetpac). I've just fixed it, so now the jetpac is re-spawned. Cheers!
Don't worry about all the questions, it's just nice to get some feedback and am happy to answer anything. :) I'm afraid there's no way past that, and that red thing is just an artefact from the Monty Mole graphics I ripped. It doesn't do anything. The Dark Sceptre character also blocks another level, and there's no way past that (until I add another level and remove the blockage).