First of all, good job submitting a game! This is an achievement on its own, and don't let anything that I say discourage you in the future!
With that being said, this game is obviously a usual case of overreaching in a game jam. You tried to make it too big, with a branching level, plot, voiceover, collectibles - no amount of assets will help you when your scope is too big. Which is a shame, because in theory I really like the concept of a TPS with throwing a bunch of dice that deal separate damage. I wish you'd focus on a single arena instead, with some pickups, waves of different enemies, different dice, upgrades - that could've been a really nice game!
But hey, many of us have been there. I'll be looking for your games in future! Good luck!