Just want to start off and say I love the concept, graphics, and excellent use of a vertical layout, but there is way too much on screen to dodge legitimately!
I say legitimately, because I figured out you could leave the game viewport when playing on browser with a mouse, and effectively get invincibility at the side of the screen.
I think the joy in these types of games comes from emergent paths, and having a playing field that lets you pick your spots, and a challenge with this many enemies at random is they often generate inescapable situations!
For Improvements, I actually think the need to hold the mouse button down is kinda redundant. I'm just holding an extra button while I dodge as I would normally. Maybe this feels different on mobile, but on browser it just led to 3 deaths in the beginning. An indicator for where the player is would be nice too. having some kind of trail or particle effect of where the player has been might leave a nice visual on the screen as you go.
Music would have been great too. If frantic dodging was the intended experience you could really amp it up with some upbeat music and jazz chords.
Probably the most unique game I've seen this jam though, so well done!