Thank you for enjoying the game despite the bugs, the flamethrower does have particles it just had a problem when exporting as a html i think its because i used a gpuparticlesystem node in Godot to create the effect and it could be too demanding, once the judging of the jam is over ill be sure to change that! Thank you for pointing out the music, i will also fix that. I play tested all the levels to make sure they were completable, i purposefully made them really hard because there are so few of them.
Thank you for the critique!