Thank you, for not only playing the game, but playing a full round and trying to break it! I honestly love that, I have 1 friend and my 11yr old Son that try to break every build of every project i make. That's truly invaluable, and your feedback was great. The Radius upgrade is certainly a little broken if stacked too high. I think my current build has some of that worked out.
The explosion was actually added to the game about 4 days before the jam ended, because the game just felt like it was missing something to give it more juice? and fun. IDK
Spent almost every spare minute of the last 3 days tuning the game around the explosion and people actually taking the explosion early in their run.
Post Jam i have added 6 new upgrades in all 3 tiers, a new enemy type that completely changes the dynamics of the game when its active, and a pause menu tracker that tracks your current upgrade bonus' .