For various reasons, he and the spider leader of the Phantom Troupe, the most powerful bandit group, formed an indissoluble bond, and they refused to give in to each other. Of course, the result was that they fell into the hands of the spider leader repeatedly. Milos was unwilling to give in and was bound to win back the game.
Milos: As a bounty hunter, you must have the awareness to fight against the Phantom Troupe!
Chrollo: Having ideals is a good thing.
Milos: Damn it! Chrollo, let's decide the outcome!