Yeah it's a tricky one. The levels obviously need to get harder so that the run will end at some point but of course it feels bad if you face something that is impossible. I really should take this game to the operation table at some point and give it some love in the form of a new patch. I guess it's been long enough now that getting back to it might even spark some new nice features it could use.
Thanks for your reply. Totally agree they need to get harder. If there was a way in the daily runs for it to test if completion was possible after it generated the level I think that would be a big improvement. But that might be a super difficult thing to do, I dunno , I'm not a coder! If its something you think you would enjoy doing then your players would appreciate the effort, but don't tear your hair out over solving it...especially given its such lovely hair :)