Splat Jaypak's Arenas

Finish the 2nd DLC in Gzor's Nightmare difficulty with Ironman mode on

Win a battle with a team of 4 or less characters in Normal Difficulty (or above)

Win the first 4 battles without having bought or sold any items in Normal Difficulty (or above)

Finish the second DLC

Fire the Elf and the Dwarf to recruit the three companions