I beat this year’s Santa’s challenge using 2 Boldtusks, Scarlett, Gormek and the traitor Wu Kong. Took a fair amount of luck to get the tiles to line up while all the ice blocks got in the way. I’m not sure if this is a strategy a relatively new player should copy since it felt much more dependent on luck than other strategies. Mana control via Proteus / Hel / etc. would always be a safer strategy. But if all you have available to you are Training Camp heroes, you do have a path to victory.
Key thing would be to pack Dragon Banners instead of antidotes since they flip Santa’s and Buddy’s debuffs. If only I could pack more than 5 banners then I wouldn’t have worried so much.