Hello,
I'm really sorry but somehow there was a bug in the last update that made it possible to get so overpowered that you are almost invincible because there is enough hp everywhere, and upgrades and tnt.
So I had to make this hotfix which drastically reduces the spawning of HP and TNT in the higher levels. (from level 40 on)
The top 3 scores in the leaderboards were set down a bit so that the scores are beatable again.
I'm sorry.....but I hope everything is fine and balanced now.