You absolutely nailed the theme! There is a TON of spinning in this game. The "wheel of death" is a cool mechanic that I want to see expanded on. It adds a bit of tension, but it would be neat if your odds of dying got greater each time.
I ran into some issues with the gameplay, though. The boss ran away and fell off the level for a bit (he did reappear, though!) I also got into a situation where 2 machineguns were shooting me, and I couldn't attack without taking damage.
That said, I liked the phases of the boss. I wasn't expecting the last one, and it made me panic a bit.
Great job!