You did a really good job with your "Rebirth of the Phoenix". I think some minor changes would be nice to have but overall I enjoyed it a lot.
How the Phoenix moves and spits fire ball are pretty good. It moves how I want but it would be nice if the fire bird could look up and down and shoot his fire balls in that directions. Enemies could be larger and phoenix smaller but it's just an idea.
I have found some bugs or mistakes like irregular upgrades. It's a small thing but it would look better if cost text would be one after another. Other than that I found that The Pyramid's laser attack don't deal any damage and can be just simply ignored.