Nice game, one of the funniest shmups in this site. I only played this demo, but let me give some feedback.
I play these kinds of casual games when Im busy multitasking or waiting for some other shit irl, so it would be nice to add a pause button even if it would turn the screen black for the duration of the pause.
Nice aesthethics and music, no complaints. Maybe in the endgame you could use a different sprite for the high hp monsters, but whatever. Right now there is less variety but it also adds to the feeling of slowly getting swarmed so its fine.
It would be nice to see which upgrades we have picked so far in the upgrade screen, theres room for them to show on one side of the screen like it happens when they kill you.
Fresh clip and Quick hands have a very similar icon, which can mislead players that are not paying too much attention.
You can get hit just after choosing an upgrade which is bullshit.
The trees are basically unkillable unless you get a freeze build. If you want to give more options to other builds Id reduce their hp so players can interact with them more often.
Hitboxes seem more or less accurate which will always feel cheap in this genre. The fact that one of my hairs or the left pinky toe barely grazed the tip of the head of one of the monsters doesnt seem like reason enough to take damage. There is also a bunch of fat people that play these games to unwarrantedly think they are skilled and ur ruining the experience for them.
Diamond seems a bit more powerful than the other chars. 6 base health trivializes runs and is way too much when other characters start with 2. She doesnt have any drawbacks either. Id give 1 extra hp to the other chars to compensate.
There is no build in which you wouldnt want to pick the movespeed talents, specifically the one that gives you +100 walking speed and the previous one. They give too much of a powerspike compared to other talents, and they are basically necessary to beat the game. As it is, its just a two level tax that also forces you to rely on rng, so id buff the base movespeed a bit and nerf the talents somewhat.
Because mobility is so valuable, the talent that gives you free ammo for standing still is pretty much useless, specially considering you can already pull off nearly infinite magazines with instant reloads if you pick the right combination of level ups, which would also still allow you to move. The bonus dmg on the crossbow for standing still is also useless past the early game.
In my limited knowledge of this game, but after spending some time trying different things, some builds look so overpowered compared to others. PierceSpreadFreeze can clear entire screens in a few shots and SpeedyBurningRegeneration is basically unkillable with a decent dodging skill. In contrast other builds (most other builds in fact) like for example ClipsizeFirerateLightning, which should be a thing considering the ammount of synergies there are available, dont have enough durability nor damage to reliably survive the last 2 minutes of the run.
Even tho the game is flawed its also fun so even after beating it with the aforementioned broken builds imma keep experimenting a bit. GG easy.