Good job in this one!
The fireball 'pass' mechanic added a lot to the gameplay, brings a lot more from what I originally expected. It also made fun challenges considering the 'time limit' aspect of it, specially on stage 4 where (at least from my experience) the strategy was to 'skip' one of the guys, so you could refill the fire and then get back to him to have more time in general.
Sounds were fun (although the 'death' guitar sound was a bit loud for me in comparison).