Update: Breaking solo adventure with Sn1p-Sn4p. Finally got my Arthas, Paladin alternate hero after beating The Lich King (with the help of the Sn1p-Sn4p combo). Deck lists in the comments section. :
Knights of the Frozen Throne (KFT) Decks & Deck Lists - Hearthstone Top Decks
Frozen Throne Adventure Guide-ish - General Discussion - Icy Veins
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Frozen Throne Solo - The Lich King - Solo Adventures - Game Modes - Hearthstone - Forums - Out of Cards
The Lich King Boss Guide - The Frozen Throne - Frozen Throne Adventure - Guides - HearthPwn
I'm the guy who did the Basic/Free to Play Adventure Decks, and I'm back again with the second wing of Icecrown Citadel! : r/hearthstone
Professor Putricide Boss Guide - Upper Reaches - Frozen Throne Adventure - Guides - HearthPwn
Hearthstone: Best Frozen Throne decks and Mission guide • Eurogamer.net
Knights of the Frozen Throne Adventure: Prologue and The Lower Citadel Discussion (Spoilers) : r/hearthstone
How To Beat Frozen Throne Adventure Hearthstone? – Novint
Guides - Frozen Throne Adventure - HearthPwn
Hearthstone: Knights of the Frozen Throne · Ryan Grier
Hearthstone Frozen Throne Adventure Guide: Prologue and Lower Citadel | Hearthstone: Heroes of Warcraft
Best Knights of the Frozen Throne Decks - Hearthstone Top Decks
The Lich King Boss Guide - The Frozen Throne - Frozen Throne Adventure - Guides - HearthPwn
Hearthstone: Frozen Throne 'Lich King, All Classes' Speedrun in 34:32 - YouTube
Hearthstone Frozen Throne Adventure Guide: Prologue and Lower Citadel | Hearthstone: Heroes of Warcraft
Crazy Hearthstone Decks: These 5 are damn mad
Brawl Block: Year of the Mammoth - Hearthstone Wiki