I love the art style! (I made a game with billboard characters too).
The ambiance was great thanks to the music and the fog. The combat animation, trail and sound feels good, but the lack of feedback make it hard to understand what is happening. And the camera control felt weird and slow.
Some Unity related stuff:
- With the old input system, use the GetAxis method instead of GetKey for WASD, because GetAxis supports different keyboard layouts. Or use the new input system with default configuration.
- Use "Cursor.lockState = CursorLockMode.Locked" or "Cursor.lockState = CursorLockMode.Confined" to prevent the cursor to go outside the game view (second screen).