Pretty neat take on the bullet hell genre!
Here I some of the gripes I had:
Hard to tell how close you need to be to eat an enemy. Often I would just run at them and then end up dying because i put myself at unnecessary risk.
I the burps felt kind of inconsistent. I assume that you need to use one to clear everything so you can go back in and eat some more dudes or heal up (because they shoot so many bullets, its unreasonable to try solely to dodge them), but often times I would go in and die any way, because they just kept on shooting. But I'm also used to playing another bullet hell with a consumable that does a similar thing, but that is given out much less frequently, so I might have been used to conserving them too much.
It's also a little hard to tell what's going on at times.
Other then those things, it was fun! Nice job!