Wonderful job!! At first I was lucky enough to find a good number of damage boosting items and thought I was going to get to sit back as I was one-hitting everything - but then the bosses gained a loottt of stats and I realized it would be smarter to round out all of my stats. One note that I have is that I think some items can be found in chests even if you have them already (I found the flippers but I had them already). Now if these aren't random and you purposefully put multiple flippers around, then I understand! But if the chests are generated then you might want to check for what the player has before generating the items to avoid duplicates.
I loved the progression and the music speeding up near the end of the timer! Great idea to make player choices affect how much time passes. I hope you continue to develop this title after the jam!!