The options menu should be centered, not tucked away in the top left of the screen. Menu categories should be underlined (currently noninteractive "OPTIONS" looks the same as the interactive "BACK" ). Ticking sound when changing volume sliders is irritating. There should be a more clear distinction between single-player and co-op, currently starting a new game is confusing in that regard. The menu font and normal font have different thicknesses. I suggest you always use the thicker one as it's easier to read. Some fonts like "PAUSED" are aliased, while the rest aren't.
Skipping the tutorial should be done by independently performing an advanced action. The current sign is too eye-grabbing and tempts new players to skip it. The left/right mouse icons should be more clear, as it's hard to tell at a glance which is highlighted. I don't get why there are two different dash lengths, as they're almost identical. Starting the game over when you die in the tutorial sucks - don't do that. Combat feels incredibly sluggish. I'm guessing it's meant to mimic Dark Souls, but it's not nearly as satisfying. Sleeping for the first time made a confusing menu pop up. The level up menu is also confusing. Sprinting is barely faster than running normally (what's the point?). The player character is too small (they normally should take up 10-20% of screen height. Yours is 7%). The poison throwing enemy is awful. The tropical music, while nice, doesn't fit the feel of the game at all. It's hard to tell what atmosphere it's going for, since I'm getting a relaxing tropical vacation vibe, but the controls and enemies feel slow, calculating, and brutal.
Local stamina bars ala Breath of the Wild are superior to Dark Souls' top of the screen. The red directional arrow should be changed to a different color, as now it looks like you're always bleeding/hurt. Attack windup should either be decreased, or you should be allowed to attack while moving. It feels so bad. There has to be a faster way to move around. Going slow is fine when you're always attentive like in Dark Souls, but doing it through empty fluff screens is painful. Getting stunlocked is not fun; avoid letting enemies do that. I found a sword but have no idea how to equip it. That whole system is confusing.
Overall, the game has a lot of soul and love poured into it. You clearly care a lot. However, that does not make it good to play. I don't see it having a future without a complete overhaul.