Level 10 is IMPOSSIBLE to clear with 3 stars. Are you sure you guys have playtested this properly? Because I'm getting the impression that you haven't.
"It's time for your guild to start building its empire across the land!" // Notice how I removed the second apostrophe? That's because it does not belong there. ("It's" is only ever used in place of "it is" or "it has". The possessive pronoun, "its", NEVER has an apostrophe in it. EVER.)
No offence, but this is probably one of the slowest "idle" games for one to actually make progress in since Cookie Clicker. (And even making progress in THAT game is WAAAY faster, compared to this game.)