Thank you so much for playing and for the feedback! I laughed out loud about the game over, because it's true, in the rush of the jam I didn't even remember or think about it until now lol.
Regarding the different styles, it really happened: on the title screen we used Canva to quickly put something together and added the flowers for identity.
Did you consider the initial cutscene a problem? Because I think it's normal for a cutscene not to be in the same pixel proportion as the game. Here, I actually reused the game's assets so I wouldn't have to redraw anything due to time constraints, but I used a closer camera to really make it look like a cutscene.
The circle in the plant area in the game used the standard Unity circular sprite in a hurry, and it really doesn't match the rest of the graphics.
As for the diagonal shot, if you use a vertical and a horizontal arrow together it shoots at 45º, but I agree that it can still be difficult to hit enemies that move at any angle.