Nice, all fixed. I got to level 11 that time, and the progress bar works fine, now that I understand it.
Don't ever feel pressed about additions, but yes, it's good to let people know what to expect in terms of development.
That boss invader was a brilliant addition. He's a tough little s.o.b. (stubborn orbital being) but I was thinking if he was the whole game, well, the game would suck. It's the variation of using the others, at various attack intensities and then knowing at some level, you have to face the boss challenge to continue, well, it just works.
Pete