It is all fixed now! Congrats.
Some feedback.
Magnet upgrade felt really powerful. Each one increased the range a ton, which is cool, but very different from the others where it is a slow grind.
The double time upgrade is useful, but felt slow. When we are already OP, even with a high level at that stat it is still a long wait until the first boss, and it is boring to wait. I think it should give more time with each level.
When hovering upgrades, it would be cool if the stat in the stat list was highlighted, so it would be easier to find it and see what is changing. And the list could be better organized with similar stats next to each other. E.g. all gem related stats are listed in sequence.
At late game, when getting multiple gems at once, it would be better if the "+X gems" text pop up would fade faster. Maybe the fade speed depends on how many gem popups are active. There are too many text overlapping at late game, and it is not that useful at that stage.
Also on late game, and maybe this is a bad idea, not sure, a toggle to fire. So instead of holding mouse button, you just click once to activate it.
The bullets could have less or no trail effects when too many on screen and on high speed, so it is easier to see them and less clutter on the screen.
And options to adjust volume and graphics would be nice.