Should You Choose to Accept It Exotic Quest Walkthrough Step 1: Collect a Cryptographic Index from the Archimedes Annex. ... Step 3: Defeat Enemies and Complete Patrols on Europa. ... Step 4: Find the Dead Drop in the Perdition Lost Sector. ... Step 5: Collect the Weapon Schematic in Operation: Seraph's Shield on Legend difficulty. More items... Jan 5, 2023