I am working on an update that should be coming out on the 10th,
It will be birthday themed, because it will be my birthday. I am working on more levels, and power-ups
Thanks for the feedback!
Edit: Putting a different update out Monday, It will have a new difficulty system,.
The difficulties will feature 1 enemy and 1 boss. This will be what you asked for, a challenge.
(It will be kind of difficult)