Like with the factions, the Marauder tribes would (or should) require you to abandon your old way of life. If you truly want to join them, that means you also share their same views and outlooks on life, namely that the established civilizations are self-serving, untrustworthy, and will betray whomever whenever it suits them, and that the Kami and Karavan are no better, nothing more than hypocritical liars. Since you share their same outlook on life, it doesn't matter that you abandon the ways of your youth.
The longer you have served the people hated by the Marauder tribes, the longer it should take for you to gain Marauder tribal acceptance. To prove your devotion, the Marauders should have you kill members of the civs, as well as both a Kami and Kara Adept. Once you are a Marauder, you should no longer be allowed near the Civ guards; would they let Aen or Lixie just stroll into Fairhaven?
It will be a hard life to follow. But Marauders have had a very hard life to live so far. The only faith a Marauder tribesman has is his own wits, his weapons and armour, and maybe some of his closest associates.
The longer you have served the people hated by the Marauder tribes, the longer it should take for you to gain Marauder tribal acceptance. To prove your devotion, the Marauders should have you kill members of the civs, as well as both a Kami and Kara Adept. Once you are a Marauder, you should no longer be allowed near the Civ guards; would they let Aen or Lixie just stroll into Fairhaven?
It will be a hard life to follow. But Marauders have had a very hard life to live so far. The only faith a Marauder tribesman has is his own wits, his weapons and armour, and maybe some of his closest associates.