This is gonna sound like I'm complaining, but honestly these are just minor setbacks. Overall, I really enjoyed the shooter. I also understand that there isn't a whole lot of time to think about little things like this during the jam, and there's so many other things that are actually needed to have in the game before you can get to this sort of thing. That said, if you want to know how you could improve the game in post, here's a list of things I noticed:
There's some trouble where the dice result won't register in some cases, but I assume that's a bug.
The dice seem to default to spinning on the up-axis, so the top result is ususally low, unless I've aimed the camera in a way that makes them bounce off a wall to spin differently. Of course, I really have no idea if that's actually how the rolling operates; the rotation could actually be RNG based, and I could just be getting unlucky. Just an observation.
Some stats like bullet number are just way more effective than stats like accuracy, so when playing I just end up using all my dice on that until I've got it to max. Upgrading stats like bullet speed didn't even seem necessary.
While the score depletion mechanic (where the scores naturally return to their original number) does keep the player from getting overpowered, it isn't really satisfying and makes my investment feel meaningless, particularly in weaker stats like accuracy. An alternative could be to make the enemies get more powerful as you upgrade, create enemies that actively deplete your scores instead of dealing damage, or even just having less depletion for less powerful stats.