History of Cold Shoulder

Overview

Triumph: as a Behemoth (Titan Stasis subclass from Destiny 2: Beyond Light), defeat combatants with grenades and melees. No count is shown in the game text.

How to complete

1. Equip Behemoth.
2. Use its grenades (Glacier Grenade, Duskfield Grenade, Coldsnap Grenade) and melee Shiver Strike for kills.
3. Tip from TheGamer: grenades are more reliable than the melee, which can struggle to lock on; the Cryoclasm aspect and Whisper of Shards fragment help recharge abilities, and Armamentarium doubles grenades.

Unconfirmed: kill count, seal and reward.