Basicaly the goal is to survive the increasing bpm.
As said in the menu, links share life, so if you shoot an enemy linked to you, you'll lose HP. I understand that this aspect of the game was not well represented. To be honest even I lost during playtesting without knowing if it was from a bullet or from the link. Adding a health bar and showing when a link is taking health from you would be an ideal solution.
Also, the movement algorithm is too simple because I feared that my game would be too difficult (an error I made at my 3d jam), still I also think that the enemies would be more interesting if they would try to find the perfect angle to shoot you.
Anyway, I appreciate a lot your feedback ! 👍