Hey, Thanks for the fun experience, I even managed to beat the game without rerolling (cus i forgot you can do that)!
I think that the idea is cool, the behaviour of enemies is fine, at some point you are moving so fast you can hit'em like a bowling ball. I'm not sure how i got hit once, because there are no damage numbers or attack sounds for enemies. Also the screenshake for enemies being hit is kinda too shaky, i think if you make the effect less intensive or get rid of it completely it will be better. Maybe tweak screenshake power based on weapon types that you are using, i'm not sure that there is this feature, correct me if im wrong. I loved tha tactical nuke mechanic, the full wipe of the map is really satisfying. The sound died for a short time after i collected all the xp crystals tho xd. Overall, good job! Could use some work, but weapon variety and the dice bombs are nice:)