Ok, now I realize the exact meaning of "Noir" in english. I knew we were deviating a bit from it with the black hole idea, but now I realize we completely missed the purpose :')
Thanks a lot for your feedback ! It should have been possible to lose during the second level. My idea was that you needed to absorb the ships from the back, as facing them would drain some mass from you until you eventually lose, but I couldn't implement the enemy behavior in time.