Should You Kill Arlecchino, The King of Riddles in Lies of P?

You finally meet the King of Riddles in Lies of P but should you kill him or not? Are his annoying riddles the only hurt he has caused?

Lies of P All Trinity Keys and Trinity Sanctum Locations - KeenGamer

Lies of P Riddle Answers and Trinity Sanctum Locations - Indie Game Culture

Arlecchino, King of Riddles - Lies of P Walkthrough - Neoseeker

Lies of P Gameplay Part 25 King of Riddles Arlecchino

Lies of P King of Riddles, Arlecchino

What To Do With Trinity Keys In Lies Of P

Lies of P (Video Game) - TV Tropes

All Truth and Lie Options - Lies of P Guide - IGN

Lies of P Trinity Sanctum Guide

Lies Of P All Arlecchino's Riddles & Their Answers - GINX TV

All Truth and Lie Options - Lies of P Guide - IGN