The difficulty curve was quite okay imo, just add a boss a battle every couple of waves and I think you should be set. Also the screen shake is alright now, nice work... But some new bugs arised:
- When there's too many audio playing at the same time, every sound just cuts off.
- Sometimes the enchanted arrows, when left for a while, bugs out and makes the arrows gravityless.
That's all really... Great work on the update!