History of Thunderhead Helm

Overview

Thunderhead Helm is the helmet piece of the Legendary Thunderhead armor set for the Titan class, from Neomuna (Lightfall). The set is themed around the Cloud Striders, and each piece carries a Cloud Strider quote as flavour text. Other class names for the same slot: Hunter Mask, Warlock Cover.

Set bonuses (per We Want Destiny 3): 2-piece "License to Thrill" gives stacking point-blank damage resistance when you activate your grenade or the Nanotech Tracer Missiles origin trait; 4-piece "Lethal Weave" grants grenade energy for defeating an unraveled combatant (or Special ammo progress at max grenade energy).

Acquisition

Unlocked by raising your reputation rank with Nimbus on Neomuna through patrols, Lost Sectors and Public Events; Destinypedia lists the full set per class, and the last piece (helmet) unlocks at rank 27 per Twinfinite's search summary (page not opened). Some pieces stay hidden until the Lightfall campaign is complete. Requires Lightfall.