Pilgrim

 is an NPC vendor that arrives when there's a house and the Insurgent has been defeated. He can tell you how many times you died in current world, and he has a death registry, in which deaths from various causes are written. You can obtain a 'Darwin Award' as a reward for completing his death registry. To do so, you have to die because of:
 * Trying to crush Altars using a hammer with less than 80% hammer power.
 * Lava
 * Suffocating in sand
 * Drowning
 * Poison

When threatened by enemies, he will defend himself with Demon Blood Sword.

If interacted with using a hardcore character, he will congratulate you for not dying once and give you the reward.