Hi! I'm currently working on the upgrade system to improve balance, including reviewing upgrade caps and progression, so hopefully it will feel much better in the next update, which I plan to release soon.
Endless Mode is also on the roadmap. In the current version it's listed as "Coming Soon", along with a Challenge Mode that I want to add in a future update.
Thank you for the support and detailed feedback. I'm actively fixing bugs, improving balance, and adding new features so the game stays fun and fresh as development continues.
I'll see you in the pit. 🤘💀