I think I would like to see higher armor values(maybe 5x higher) and slightly lower health to balance it as armor doesn't feel impactful at all. I am about halfway through and armor on the current region is only about 5% of my current attack.
Coins only give you a 1% boost to your income on each rune and provide no other benefit as far as I can tell. they you have to gain 1 trillion more than you had to gain for the previous coin(first coin is gain 1 trillion, 2nd coin is gain 2 trillion MORE for a total of 3 trillion, coin after that is 3 trillion more for a total of 6 trillion). So you will want to gain quite a few coins before the first reset to make it worth your time.
Also, battles are only affected by your raw income, click income is not counted. So when you want to win a battle, it is better to choose skills that favor increasing your base income per second.(like the gain 100% income if you haven't clicked the rune in 1 minute passive skill is awesome for winning battles)
Needs better clarity that you win battles to unlock more runes, and you can choose which rune you want on the right side. But it should be much more clear that you only get to pick 1 out of the 2 rune options and the other option will go away.
only took 25 minutes on the game timer for that medium badge for me.. and the first 10 minutes of that was spent on the first 10 levels trying too hard. Most levels only took about 5-12 seconds once I figured out how it worked. Just find the front by somewhat lining up the cone in the stars and letting the game auto align, and then line up the rotate(again using the games auto complete).
the trick on pro isn't to hold and hope it finds its spot... it is to throw the stars near to what you know is right and let the games 2 auto complete features(auto line up and auto correct rotation). So you just chuck the rotator and let off the mouse and let it finish where it wants.
Some small things.. I wish I could hide achievements earned, See total dps boost from achievements on the achievements page and something like a "save formation feature" or a switch formation feature that lets have an alternative formation. I switch my formation up a bit for boss fights as opposed to grinding(more gold generation when grinding)