This game is brutal, and it is also incredibly engaging, the result is that no matter how many times I died I kept retrying till 1am...when I really had to stop. I am sure most of what I'm going to say has been said before but in case it hasn't and because of how much time I spent trying to get passed stage 4 I feel compelled to write it all out.
Lets start with presentation.
This game looks really nice, and I mean really nice. I really like the pattern backgrounds and it gave me an almost Alice in Wonderland vibe, in fact the whole game gave off that vibe(at least as far as I have gone). The only presentation issue I noticed is that on the levels where the ground is red, it becomes impossible to read enemy health bars. This is not a big issue but I felt it was worth mentioning
The music was very good as well and kept me happy, it did not overstay it's welcome which can happen in harder games like this. So all in all I think the music was fantastic, and it mixed well with he other audio elements of the game ( a common pitfall of game jams that I am also guilty of). So presentation wise i think this game did very well. It came off as rather professional and well put together.
Now for the gameplay/game design/mechanics.
The gameplay for this one is pretty unique as far as the jam goes, rather than rely on a bullet hell format where the player is armed to the teeth, you opted to make the player dash, this presented some really fun and unique challenges and I was always trying to time my attacks to have the lowest risk of counter attack. Early on I thought I found a winning strategy where I would just aim my reticle into the center of the map and navigate the outskirts in a clockwise circle before launching attacks into the center. This worked for all about 5 minutes until you introduced the spikes forcing me to change my strategy. <- This is good game design, and I was honestly impressed. The overall design of the levels was really well done because each stage had different strategy requirements. Now about the dice, I really like the idea of attaching stats and boosts to them, but occasionally I couldn't tell if they had taken effect or I had lost them to a bug( I think that happened when I was using one next to a heckhole it disappeared and nothing changed). For the heart dice it might do well to explain that holding on to them is what gives you the extra heart space as I initially thought that using them would provide the heart space not lose it . This change in dice behavior can be a bit confusing given the need to use the other dice but now hold on to heart dice. I realized this difference with the heart space after I went back to confirm what I had written in my initial review, so I came back to edit it with my new realizations. These however are fairly minor issues and are in no way meant to dampen your spirits or make you feel meh about this game. It is a really really good game, and these last few things were less than problems and didn't stop me from repeatedly replaying the game.
Overall, I sincerely enjoyed the game, and I hope you expand upon it. Great work to all those involved.
ps- Sorry for the mountainous review lolz.