Improvements since the 1.0 lite version:
-added a soft and hard cap on the score multiplier with a decay system, will make a more detail post about this at a later time.
-added an option to turn off firepower related upgrades
-added touch sensitivity setting in the option screen
-added a boss phase timer
-enemies now have a more visible indication to show that they're being hit
-performance optimizations, the game should now run smoother and more stable in general
there're probably more changes, but I really ought to just get some sleep instead.