Thanks for your feedback. However, it would be better if you post your feedback on DeviantArt or Discord. Because I rarely look at the comments here and only saw your contribution by chance. However, some of your points are really interesting and I will take care of fixing these issues with the next update.
The thing about using the mouse in combat is that the characters overlap. You must see each character as a square object. Selecting with the mouse is therefore really impractical and that's why I disabled it on purpose.
However, I can't find the delay that you mention with Alina. It could be that you have the animations disabled and there is some remaining animation delay maybe. Because at the beginning there is a bite animation on the targeted character.
The difficulty levels are only there to challenge yourself. I deliberately didn't hide any benefit or rewards behind higher difficulties. Because that would give players who can't handle them the feeling of not being able to experience everything in the game or being treated unfairly.
You're right about the equipment, I'll adjust that with the next patch.
Belly rub on yourself really isn't working as intended. I will also fix that with the next patch.
I think characters that have two types at the same time and therefore double weakness are very impractical. With only three types and only a maximum of 24 planned characters, I think that's difficult to implement. There are already and will be some new characters that have multiple body types, but only one at a time. So there will be no type combinations even in the full game.
Alina is still pretty OP. So it can be expected that it will get a small nerf in a future update. I hope that doesn't come as a surprise.