Some feedback.
I use unity not godot, but I spotting an issue that may be same cause, when you import an image, do have option of bilinear filtering? if so do not use it for pixel images, use Nearest Neighbour or None depending on what option in Godot. This is why some of your mutant dogs are blurred.
For this type of game, I would not rotate the images of the dogs as they follow your player, just flip the image on X-axis so that they point in direction of the player.
The cartoon setting of the scene was a nice touch. The instruction page was hard to read. Think about the choice of font, its contrast to the background the text will be on, and the layout and structure to emphasize the information it is giving.
Hope you take feedback as means to improve for next one.
I like the game and enjoyed playing it, and I loved the title of the game.