I am back once again, and this time I actually counted. Decided to stop at good ol' stage 69. Got a few more notes here:
The fov is a bit too small. Combined with the fact that not all enemies glow, it sometimes makes it hard to avoid things like the snakes that come right at you out of nowhere. I think it would be good to increase the fov size, or at least make all the enemies glow.
On the bug stage, it felt a lot more rare to get one of those 4 way split rooms that lets you choose which room to go to (like the shop or boss).
The snakes can hit you before you get far enough into a room for the door to close.
Sometimes there can be a big crowd of enemies directly in front of the door which is a bit inconvenient.
There's a small visual glitch in the sequencer when going into full screen mode. You can see it in the screenshot above, where one of the columns stays permanently Thicc™. It happens to whichever column is currently Thicc™ when you go into full screen.
The barrier passive can shield you from taking damage from the bug boss' second attack with the columns of bugs. Not sure if this is intentional or not.
When you start getting a ton of bullets on screen like with the setup I have up there, it sometimes makes it difficult to see your character while moving around and shooting in close quarters.
Enemy bullets can be hard to see over your own attack since they both glow to the same white. It might be good to pull the red bullets to the top layer so you can see it over your attack, but there's probably a better solution than that.
[edit] A pause menu would be very nice.
Anyways, that's all I can remember for now, I'll edit this comment if I think of anything later.