Genome Guardian - Boombox is jamming to the beat!

Boombox is probably one of the most interesting characters I've seen in any roguelike. It's main gimmick is that it constnatly changes it stats to the rhythm of the music, with a more intense music resulting in a merciless rain of giant bullets while a slow music will make you more vulnerable.
I also thought it would be a nice change of pace to showcase the new SHMUP mode, which changes heavily the gameplay. Now you can move around on a horizontal axis while enemies will come from the top.