Love the game! I feel like I've gone through all the content, and will save to play it again. My suggestion is having some sort of notification and/or badge for when you've reached the end of current content (i.e., all upgrades bought)
Thank you! I am really happy you played the game and enjoyed it! I truly appreciate your feedback and support!
That is a great idea - having a final talent in the tree as a sort of badge for reaching the end of the current content would be a nice touch. I will definitely keep that in mind for a future update.