After numerous questions on the reward tiers, inXile has clarified the Kickstarter tiers, and the details of each tier can be found written out in the FAQ. Among other things, it confirms the state and shrine stack with the earlier artifact+NPC/Weapon/Location name vanity rewards, that the medals stack over tiers, and that the $150+ tiers have either a T-Shirt OR a poster/coin/boxed copy.
