Really fun, though the fact that i couldn't use both weapons at the same time felt weird, but i suspect it was an engine limitation, it would also be cool if the final boss would also do a kick of sorts just to keep you on your toes.
One nitpick i have with this is that the enemy projectiles can easily not be seen from faraway given that they blend with the ground, Prehaps give them a red outline to distinguish them better?