Thank you so much for the detailed feedback, I really appreciate you taking the time to write it!
About having to hunt for the Continue button and the popup text going off-screen, I definitely agree that it can feel like you’re searching for it. I actually experimented with using WASD to move around the upgrade screen, but I decided to keep the game mouse-only for simplicity. In hindsight, keeping the keyboard navigation there as an option probably would have made that screen feel smoother.
I’m really glad you enjoyed the skill tree, juice, and overall feel, thanks again for playing and for the kind words!