Music. Is. Tight! All of the bosses were awesome and unique. Number 16 was a real pain, probably couldn't have done it without the jukebox and even then it took me a couple different songs.
Before I play most games I look at the comments to see if I can find out any neat tricks about the game and by looking at said comments I can already tell that this game has a lot of thought put into it since the developer replies to many of the comments, kudos playpanic.
Level up your market max before spending score to get the most out of of. Try to upgrade your palace and mines to max as well. You can get to level 8 by just upgrading catapult and sending in normal troops for low gold to push while you blast them down. Later on you'll need lots of stone so don't sell it but you should be okay selling some crystals especially if it'll get you your mine earlier.
thank you! glad you dig.